[clang] [Sema] Fix crash in __builtin_dump_struct with -Werror -Wformat-pedantic (PR #212377)

[Younan Zhang via cfe-commits]

https://github.com/zyn0217 approved this pull request.

Please also add a release note, else LGTM too

https://github.com/llvm/llvm-project/pull/212377