[llvm] [llvm][CodeExtractor] fix bug in parameter naming (PR #114237)

[Tom Eccles via llvm-commits]

tblah wrote:

> I think I have a more comprehensive fix here that does not need to introduce new maps to workaround bugs: #114419 Would you review it? I'd rebase it in that case.

Thanks for posting your solution. Your patch does pass my regression test. Can we continue with my patch to get a temporary fix in until you can finish your patch, or would you prefer I close this PR?

https://github.com/llvm/llvm-project/pull/114237