[clang] Suppress noreturn warning if last statement in a function is a throw (PR #145166)

[Erich Keane via cfe-commits]

https://github.com/erichkeane commented:

This seems reasonable to me, though I'd like to give other reviewers a chance. I think we need to be less optimistic in the release notes (clarifying that we are doing a very mild pattern match), else I think this is sensible.

https://github.com/llvm/llvm-project/pull/145166