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

[Vlad Serebrennikov via cfe-commits]

Endilll wrote:

> @Endilll you are able to reduce that further?

I don't see the original reproducer anywhere. Snippet in the description is already reduced (and got quite damaged in the process). I can reduce it myself if someone point me out to the original reproducer

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