[clang] [clang] Do not infer lifetimebound for functions with void return type (PR #131997)

[Ilya Biryukov via cfe-commits]

https://github.com/ilya-biryukov requested changes to this pull request.

There seem to be some errors missing the attribute tests now (see buildkythe failures)

https://github.com/llvm/llvm-project/pull/131997