[clang] [clang][NFC] Prevent scope pollution from repeat type specifiers (PR #193144)

[Timm Baeder via cfe-commits]

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@@ -1694,8 +1694,12 @@ void Parser::ParseClassSpecifier(tok::TokenKind TagTokKind,
   PreserveAtomicIdentifierInfoRAII AtomicTokenGuard(
       Tok, ShouldChangeAtomicToIdentifier);
 
+  // We use a temporary scope when parsing the name specifier for a
+  // declaration with additional invalid type specifiers
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tbaederr wrote:

```suggestion
  // declaration with additional invalid type specifiers.
```

https://github.com/llvm/llvm-project/pull/193144