[clang] [Clang] Report an error and crash on source location exhaustion in macros (PR #69908)

[Sam McCall via cfe-commits]

https://github.com/sam-mccall commented:

Upgrading this from assert to diag+crash makes sense to me.
Am I missing where the crash happens though?

https://github.com/llvm/llvm-project/pull/69908