[llvm] [NVPTXCtorDtorLowering] Removing unnecessary pointer arithmetic (PR #182269)

[Joseph Huber via llvm-commits]

https://github.com/jhuber6 approved this pull request.

Honestly don't remember why it was written this way. I think I originally used a different method and turned what clang gave me at O2 into builder commands, then I fixed something and never thought about this being unnecessary now. Thanks for catching this.

https://github.com/llvm/llvm-project/pull/182269