[clang] [ObjC] Stop hard-coding the list of keywords that are allowed in selectors (PR #138952)

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github-actions[bot] wrote:

<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


:warning: C/C++ code formatter, clang-format found issues in your code. :warning:

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You can test this locally with the following command:
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``````````bash
git-clang-format --diff HEAD~1 HEAD --extensions cpp -- clang/lib/Parse/ParseObjc.cpp
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<details>
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View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/Parse/ParseObjc.cpp b/clang/lib/Parse/ParseObjc.cpp
index a427cb24e..0dd65b8ec 100644
--- a/clang/lib/Parse/ParseObjc.cpp
+++ b/clang/lib/Parse/ParseObjc.cpp
@@ -1095,7 +1095,7 @@ IdentifierInfo *Parser::ParseObjCSelectorPiece(SourceLocation &SelectorLoc) {
   }
 
   case tok::identifier:
-#define KEYWORD(X,Y) case tok::kw_ ## X:
+#define KEYWORD(X, Y) case tok::kw_##X:
 #include "clang/Basic/TokenKinds.def"
     IdentifierInfo *II = Tok.getIdentifierInfo();
     SelectorLoc = ConsumeToken();

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https://github.com/llvm/llvm-project/pull/138952