fixup! [clang] Ignore GCC 11 [[malloc(x)]] attribute

Support bugprone-argument-comment format.

Co-authored-by: Shafik Yaghmour <[email protected]>

Author: aloisklink

clang/include/clang/Basic/Attr.td

@@ -1629,8 +1629,8 @@ def IFunc : Attr, TargetSpecificAttr<TargetELF> {
 
 def Restrict : InheritableAttr {
   let Spellings = [Declspec<"restrict">, GCC<"malloc">];
-  let Args = [IdentifierArgument<"Deallocator", /*opt*/ 1>,
-              ParamIdxArgument<"DeallocatorPtrArgIndex", /*opt*/ 1>];
+  let Args = [IdentifierArgument<"Deallocator", /*opt=*/ 1>,
+              ParamIdxArgument<"DeallocatorPtrArgIndex", /*opt=*/ 1>];
   let Subjects = SubjectList<[Function]>;
   let Documentation = [RestrictDocs];
 }