[llvm] [llvm-objcopy] Check for missing argument values (PR #70710)

[Alexey Karyakin via llvm-commits]

quic-akaryaki wrote:

I'm sorry I dropped the ball on this PR. I closed the branch as part of clean up. There may still be some value in this change.

https://github.com/llvm/llvm-project/pull/70710