[clang] [clang][CodeGen] Fix invalid bitcast in InitCatchParam for non-zero address space pointers (PR #224680)

[Eli Friedman via cfe-commits]

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

Have you run a test to confirm that the catching a pointer this way actually works, in addition to generating valid IR?

Otherwise LGTM

https://github.com/llvm/llvm-project/pull/224680