[llvm] [WinEH] Remove incoming values in the reverse order in UpdatePHIOnClonedBlock (NFC) (PR #171962)

[Nikita Popov via llvm-commits]

https://github.com/nikic commented:

Can this use removeIncomingValueIf() instead? That exists to remove incoming values based on a predicate in a safe and efficient way.

https://github.com/llvm/llvm-project/pull/171962