[llvm] [Inliner] Prevent adding pointer attributes to non-pointer arguments (PR #115569)

[Harald van Dijk via llvm-commits]

hvdijk wrote:

> We should entirely skip the getUnderlyingObject logic for non-pointer arguments instead.

Good thinking, that passes testing and is simpler. Done.

https://github.com/llvm/llvm-project/pull/115569