[clang] [clang] Fix crash in isAtEndOfMacroExpansion at FileID boundary. (PR #191734)

[Tom Weaver via cfe-commits]

TomWeaver18 wrote:

@hokein Hello from the UK! 

Just to let you know I've proposed a small addition to the macro-braces-recovery.cpp test added in this patch at the following PR:

https://github.com/llvm/llvm-project/pull/192654

Would you be ok taking a look at it?

thanks! :)

https://github.com/llvm/llvm-project/pull/191734