[clang] [clang] Clean up switch stack when transforming an invalid body (PR #211162)

[via cfe-commits]

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@@ -116,6 +116,16 @@ void case_default(int i) {
   }
 }
 
+void PR211162(int i) {
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woruyu wrote:

Done!

https://github.com/llvm/llvm-project/pull/211162