Apply suggestions from code review

Co-authored-by: Mariya Podchishchaeva <[email protected]>

Author: hoodmane

clang/lib/Sema/SemaWasm.cpp

@@ -52,7 +52,7 @@ static bool CheckWasmBuiltinArgIsInteger(Sema &S, CallExpr *E,
 }
 
 bool SemaWasm::BuiltinWasmRefNullExtern(CallExpr *TheCall) {
-  if (SemaRef.checkArgCount(TheCall, 0))
+  if (SemaRef.checkArgCount(TheCall, /*DesiredArgCount=*/ 0))
     return true;
 
   TheCall->setType(getASTContext().getWebAssemblyExternrefType());
@@ -62,7 +62,7 @@ bool SemaWasm::BuiltinWasmRefNullExtern(CallExpr *TheCall) {
 
 bool SemaWasm::BuiltinWasmRefNullFunc(CallExpr *TheCall) {
   ASTContext &Context = getASTContext();
-  if (SemaRef.checkArgCount(TheCall, 0))
+  if (SemaRef.checkArgCount(TheCall, /*DesiredArgCount=*/ 0))
     return true;
 
   // This custom type checking code ensures that the nodes are as expected