[clang] [Clang][CodeGen] Fix bad codegen when building Clang with latest MSVC (PR #102681)

[Saleem Abdulrasool via cfe-commits]

https://github.com/compnerd approved this pull request.

Might be nice to clean this up in the future but hen Microsoft releases a fix.

https://github.com/llvm/llvm-project/pull/102681