[clang] [clang][Parser] Fix crash on invalid attribute in constexpr function (PR #144286)

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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/test/Parser/cxx-invalid-attr-in-constexpr-crash.cpp clang/lib/Parse/ParseDeclCXX.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/ParseDeclCXX.cpp b/clang/lib/Parse/ParseDeclCXX.cpp
index ed401c894..a5c76501c 100644
--- a/clang/lib/Parse/ParseDeclCXX.cpp
+++ b/clang/lib/Parse/ParseDeclCXX.cpp
@@ -763,7 +763,7 @@ Parser::DeclGroupPtrTy Parser::ParseUsingDeclaration(
 
     if (!AD)
       return nullptr;
-    
+
     return Actions.ConvertDeclToDeclGroup(AD, DeclFromDeclSpec);
   }
 

``````````

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https://github.com/llvm/llvm-project/pull/144286