[clang] [clang][Sema] Add diagnostic note for reference of function-like macros requiring without parentheses (PR #123495)

[Aaron Ballman via cfe-commits]

================
@@ -2624,6 +2648,9 @@ bool Sema::DiagnoseEmptyLookup(Scope *S, CXXScopeSpec 
&SS, LookupResult &R,
   }
   R.clear();
 
+  if (isFunctionLikeMacro(Name, SemaRef, R.getNameLoc()))
----------------
AaronBallman wrote:

```suggestion
  if (diagnoseFunctionLikeMacro(SemaRef, Name, R.getNameLoc()))
```

https://github.com/llvm/llvm-project/pull/123495
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