fix(dracut): shellcheck regression in DRACUT_INSTALL calls

If the DRACUT_INSTALL environment variable contains arguments (e.g.:
DRACUT_INSTALL="/usr/lib/dracut/dracut-install --debug"), its call cannot
be enclosed in double quotes. E.g.:

```
> export DRACUT_INSTALL="/usr/lib/dracut/dracut-install"
> "$DRACUT_INSTALL" > /dev/null
dracut-install: No SOURCE argument given
> export DRACUT_INSTALL="/usr/lib/dracut/dracut-install --debug"
> "$DRACUT_INSTALL" > /dev/null
-bash: /usr/lib/dracut/dracut-install --debug: No such file or directory
> $DRACUT_INSTALL > /dev/null
dracut-install: No SOURCE argument given

```

Author: aafeijoo-suse

dracut-init.sh

@@ -203,15 +203,15 @@ fi
 if [[ $hostonly == "-h" ]]; then
     if ! [[ $DRACUT_KERNEL_MODALIASES ]] || ! [[ -f $DRACUT_KERNEL_MODALIASES ]]; then
         export DRACUT_KERNEL_MODALIASES="${DRACUT_TMPDIR}/modaliases"
-        "$DRACUT_INSTALL" ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${srcmods:+--kerneldir "$srcmods"} --modalias > "$DRACUT_KERNEL_MODALIASES"
+        $DRACUT_INSTALL ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${srcmods:+--kerneldir "$srcmods"} --modalias > "$DRACUT_KERNEL_MODALIASES"
     fi
 fi
 
 [[ $DRACUT_RESOLVE_LAZY ]] || export DRACUT_RESOLVE_DEPS=1
 inst_dir() {
     local _ret
     [[ -e ${initdir}/"$1" ]] && return 0 # already there
-    if "$DRACUT_INSTALL" ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} -d "$@"; then
+    if $DRACUT_INSTALL ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} -d "$@"; then
         return 0
     else
         _ret=$?
@@ -227,7 +227,7 @@ inst() {
         shift
     fi
     [[ -e ${initdir}/"${2:-$1}" ]] && return 0 # already there
-    if "$DRACUT_INSTALL" ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@"; then
+    if $DRACUT_INSTALL ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@"; then
         return 0
     else
         _ret=$?
@@ -244,7 +244,7 @@ inst_simple() {
     fi
     [[ -e ${initdir}/"${2:-$1}" ]] && return 0 # already there
     [[ -e $1 ]] || return 1                    # no source
-    if "$DRACUT_INSTALL" ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${_hostonly_install:+-H} "$@"; then
+    if $DRACUT_INSTALL ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${_hostonly_install:+-H} "$@"; then
         return 0
     else
         _ret=$?
@@ -261,7 +261,7 @@ inst_symlink() {
     fi
     [[ -e ${initdir}/"${2:-$1}" ]] && return 0 # already there
     [[ -L $1 ]] || return 1
-    if "$DRACUT_INSTALL" ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@"; then
+    if $DRACUT_INSTALL ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@"; then
         return 0
     else
         _ret=$?
@@ -276,7 +276,7 @@ inst_multiple() {
         _hostonly_install="-H"
         shift
     fi
-    if "$DRACUT_INSTALL" ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} -a ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@"; then
+    if $DRACUT_INSTALL ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} -a ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@"; then
         return 0
     else
         _ret=$?
@@ -298,7 +298,7 @@ dracut_instmods() {
         [[ $i == "--silent" ]] && _silent=1
     done
 
-    if "$DRACUT_INSTALL" \
+    if $DRACUT_INSTALL \
         ${dracutsysrootdir:+-r "$dracutsysrootdir"} \
         ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${hostonly:+-H} ${omit_drivers:+-N "$omit_drivers"} ${srcmods:+--kerneldir "$srcmods"} -m "$@"; then
         return 0
@@ -319,7 +319,7 @@ inst_library() {
     fi
     [[ -e ${initdir}/"${2:-$1}" ]] && return 0 # already there
     [[ -e $1 ]] || return 1                    # no source
-    if "$DRACUT_INSTALL" ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@"; then
+    if $DRACUT_INSTALL ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@"; then
         return 0
     else
         _ret=$?
@@ -330,7 +330,7 @@ inst_library() {
 
 inst_binary() {
     local _ret
-    if "$DRACUT_INSTALL" ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} "$@"; then
+    if $DRACUT_INSTALL ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} "$@"; then
         return 0
     else
         _ret=$?
@@ -341,7 +341,7 @@ inst_binary() {
 
 inst_script() {
     local _ret
-    if "$DRACUT_INSTALL" ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} "$@"; then
+    if $DRACUT_INSTALL ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} "$@"; then
         return 0
     else
         _ret=$?
@@ -352,7 +352,7 @@ inst_script() {
 
 inst_fsck_help() {
     local _ret _helper="/run/dracut/fsck/fsck_help_$1.txt"
-    if "$DRACUT_INSTALL" ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} "$2" "$_helper"; then
+    if $DRACUT_INSTALL ${dracutsysrootdir:+-r "$dracutsysrootdir"} ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} "$2" "$_helper"; then
         return 0
     else
         _ret=$?
@@ -1112,7 +1112,7 @@ instmods() {
         return 0
     fi
 
-    "$DRACUT_INSTALL" \
+    $DRACUT_INSTALL \
         ${initdir:+-D "$initdir"} \
         ${dracutsysrootdir:+-r "$dracutsysrootdir"} \
         ${loginstall:+-L "$loginstall"} \

dracut.sh

@@ -2168,8 +2168,9 @@ if [[ $kernel_only != yes ]]; then
 
     if [[ $DRACUT_RESOLVE_LAZY ]] && [[ $DRACUT_INSTALL ]]; then
         dinfo "*** Resolving executable dependencies ***"
+        # shellcheck disable=SC2086
         find "$initdir" -type f -perm /0111 -not -path '*.ko' -print0 \
-            | xargs -r -0 "$DRACUT_INSTALL" ${initdir:+-D "$initdir"} ${dracutsysrootdir:+-r "$dracutsysrootdir"} -R ${DRACUT_FIPS_MODE:+-f} --
+            | xargs -r -0 $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${dracutsysrootdir:+-r "$dracutsysrootdir"} -R ${DRACUT_FIPS_MODE:+-f} --
         dinfo "*** Resolving executable dependencies done ***"
     fi