[clang] [clang] fix sema init crash for not checking a ExprResult (PR #98102)

[Aaron Ballman via cfe-commits]

https://github.com/AaronBallman commented:

The changes LGTM, but please add a release note to clang/docs/ReleaseNotes.rst so users know about the fix.

https://github.com/llvm/llvm-project/pull/98102