[clang] [clang] Fix crash when `__builtin_function_start` is given an invalid first parameter (PR #155506)

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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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<summary>
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/SemaCXX/gh113323.cpp clang/lib/Sema/SemaChecking.cpp
``````````

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<details>
<summary>
View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/Sema/SemaChecking.cpp b/clang/lib/Sema/SemaChecking.cpp
index 690b78ef7..dc3f9ec5b 100644
--- a/clang/lib/Sema/SemaChecking.cpp
+++ b/clang/lib/Sema/SemaChecking.cpp
@@ -286,8 +286,8 @@ static bool BuiltinFunctionStart(Sema &S, CallExpr *TheCall) {
   if (S.checkArgCount(TheCall, 1))
     return true;
 
-  if(TheCall->getArg(0)->containsErrors())
-      return true;
+  if (TheCall->getArg(0)->containsErrors())
+    return true;
 
   ExprResult Arg = S.DefaultFunctionArrayLvalueConversion(TheCall->getArg(0));
   if (Arg.isInvalid())

``````````

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https://github.com/llvm/llvm-project/pull/155506