TEST: Modernization of stdarch-{verify,test}

This commit fixes minor nits that caused 5 Clippy warnings.

Author: a4lg

crates/stdarch-test/src/lib.rs

@@ -71,7 +71,7 @@ pub fn assert(shim_addr: usize, fnname: &str, expected: &str) {
     //eprintln!("  function: {:?}", function);
 
     let mut instrs = &function.instrs[..];
-    while instrs.last().map_or(false, |s| s == "nop" || s == "int3") {
+    while instrs.last().is_some_and(|s| s == "nop" || s == "int3") {
         instrs = &instrs[..instrs.len() - 1];
     }
 

crates/stdarch-verify/src/lib.rs

@@ -498,6 +498,7 @@ fn find_target_feature(attrs: &[syn::Attribute]) -> Option<syn::Lit> {
     attrs
         .iter()
         .flat_map(|a| {
+            #[allow(clippy::collapsible_if)]
             if let syn::Meta::List(ref l) = a.meta {
                 if l.path.is_ident("target_feature") {
                     if let Ok(l) =
@@ -526,6 +527,7 @@ fn find_doc(attrs: &[syn::Attribute]) -> String {
     attrs
         .iter()
         .filter_map(|a| {
+            #[allow(clippy::collapsible_if)]
             if let syn::Meta::NameValue(ref l) = a.meta {
                 if l.path.is_ident("doc") {
                     if let syn::Expr::Lit(syn::ExprLit {