[clang] [Clang] use colon char instead of token name (PR #144068)

[Mariya Podchishchaeva via cfe-commits]

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@@ -836,8 +836,7 @@ StmtResult Parser::ParseCaseStatement(ParsedStmtContext StmtCtx,
 
       Diag(ExpectedLoc, diag::err_expected_after)
           << "'case'" << tok::colon
-          << FixItHint::CreateInsertion(ExpectedLoc,
-                                        tok::getTokenName(tok::colon));
+          << FixItHint::CreateInsertion(ExpectedLoc, ":");
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Fznamznon wrote:

Maybe
```suggestion
          << FixItHint::CreateInsertion(ExpectedLoc, tok::getPunctuatorSpelling(tok::colon));
```

https://github.com/llvm/llvm-project/pull/144068