[clang] WebKit Checkers should set DeclWithIssue. (PR #109389)

[Ryosuke Niwa via cfe-commits]

================
@@ -134,18 +135,25 @@ class UncountedLocalVarsChecker
       bool shouldVisitTemplateInstantiations() const { return true; }
       bool shouldVisitImplicitCode() const { return false; }
 
+      bool TraverseDecl(Decl *D) {
+        llvm::SaveAndRestore SavedDecl(DeclWithIssue);
+        if (D && isa<FunctionDecl>(D))
----------------
rniwa wrote:

Okay, I think we should add the support for `ObjCMethodDecl` in that case.

https://github.com/llvm/llvm-project/pull/109389