refactor(cli): fix clippy warning

Signed-off-by: Kevin W Matthews <[email protected]>

Author: KevinWMatthews

crates/ilp-cli/src/interpreter.rs

@@ -144,7 +144,7 @@ impl NodeClient<'_> {
             _ => Err(Error::ProtocolErr("Unexpected protocol")),
         }?;
 
-        if let Err(_) = url.set_scheme(scheme) {
+        if url.set_scheme(scheme).is_err() {
             return Err(Error::SchemeErr());
         };