[clang] [Clang] fix missing source location for errors in macro-expanded (PR #143460)

[Eli Friedman via cfe-commits]

https://github.com/efriedma-quic approved this pull request.

LGTM

(It might be worth trying to audit other uses of getLocForEndOfToken; it looks like there are other dubious uses.  But we don't need to do everything in one patch.)

https://github.com/llvm/llvm-project/pull/143460