[arm] fix unused unsafe warning

gnzlbg · BurntSushi · commit 077a73666d82 · 2017-09-28T07:07:34.000-04:00
diff --git a/src/arm/v8.rs b/src/arm/v8.rs
@@ -31,7 +31,7 @@ extern "C" {
 #[inline(always)]
 #[cfg_attr(test, assert_instr(rbit))]
 pub unsafe fn _rbit_u64(x: u64) -> u64 {
-    unsafe { rbit_u64(x as i64) as u64 }
+    rbit_u64(x as i64) as u64
 }
 
 /// Counts the leading most significant bits set.

Original file line number	Diff line number	Diff line change
`@@ -31,7 +31,7 @@ extern "C" {`
`31`	`31`	`#[inline(always)]`
`32`	`32`	`#[cfg_attr(test, assert_instr(rbit))]`
`33`	`33`	`pub unsafe fn _rbit_u64(x: u64) -> u64 {`
`34`		`- unsafe { rbit_u64(x as i64) as u64 }`
	`34`	`+ rbit_u64(x as i64) as u64`
`35`	`35`	`}`
`36`	`36`
`37`	`37`	`/// Counts the leading most significant bits set.`