[clang] [Clang] Properly parse enumeration declarations with fixed underlying type in generic associations (PR #210353)

[Aaron Ballman via cfe-commits]

================
@@ -8677,6 +8683,13 @@ class Parser : public CodeCompletionHandler {
     return isCXXTypeId(Context, isAmbiguous);
   }
 
+  bool isNextCXXTypeId(TentativeCXXTypeIdContext Context, bool &isAmbiguous);
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AaronBallman wrote:

```suggestion
  bool isNextCXXTypeId(TentativeCXXTypeIdContext Context, bool &IsAmbiguous);
```

https://github.com/llvm/llvm-project/pull/210353