[clang] [clang-tools-extra] [Clang] [C2y] Implement N3355 ‘NamedLoops’ (PR #152870)

[Aaron Ballman via cfe-commits]

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@@ -255,6 +255,10 @@ class Scope {
   /// available for this variable in the current scope.
   llvm::SmallPtrSet<VarDecl *, 8> ReturnSlots;
 
+  /// If this scope belongs to a loop or switch statement, the label that names
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AaronBallman wrote:

```suggestion
  /// If this scope belongs to a loop or switch statement, the labels that name
```

https://github.com/llvm/llvm-project/pull/152870