Replace let Some(..) = with .is_some()

Signed-off-by: wcampbell <wcampbell1995@gmail.com>

Author: wcampbell0x2a

compiler/rustc_ast/src/attr/mod.rs

@@ -526,7 +526,7 @@ impl MetaItemKind {
     fn list_from_tokens(tokens: TokenStream) -> Option<MetaItemKind> {
         let mut tokens = tokens.into_trees().peekable();
         let mut result = Vec::new();
-        while let Some(..) = tokens.peek() {
+        while tokens.peek().is_some() {
             let item = NestedMetaItem::from_tokens(&mut tokens)?;
             result.push(item);
             match tokens.next() {

compiler/rustc_mir/src/shim.rs

@@ -165,7 +165,7 @@ fn build_drop_shim<'tcx>(tcx: TyCtxt<'tcx>, def_id: DefId, ty: Option<Ty<'tcx>>)
     let mut body =
         new_body(source, blocks, local_decls_for_sig(&sig, span), sig.inputs().len(), span);
 
-    if let Some(..) = ty {
+    if ty.is_some() {
         // The first argument (index 0), but add 1 for the return value.
         let dropee_ptr = Place::from(Local::new(1 + 0));
         if tcx.sess.opts.debugging_opts.mir_emit_retag {