[clang-tools-extra] Refactor clang doc comment structure (PR #142273)

[Paul Kirth via cfe-commits]

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@@ -316,8 +316,13 @@ static llvm::Error parseRecord(const Record &R, unsigned ID,
 static llvm::Error parseRecord(const Record &R, unsigned ID,
                                llvm::StringRef Blob, CommentInfo *I) {
   switch (ID) {
-  case COMMENT_KIND:
-    return decodeRecord(R, I->Kind, Blob);
+  case COMMENT_KIND: {
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ilovepi wrote:

The braces still seem to be here. We return from this block and shouldn't have any decls that would conflict, so the braces aren't needed are they? I'm generally fine w/ bracing on switch statements, but the convention in this function/file is not to have them, so I'd like to stay consistent.

https://github.com/llvm/llvm-project/pull/142273