[llvm] [llvm-objdump][ELF] Ensure offset to verdaux entry array does not go past size (PR #115284)

[Antonio Frighetto via llvm-commits]

antoniofrighetto wrote:

@jh7370, I rebased this to the other PR, but commits have been split up. Should have reviewed everything, feel free to let me know if it makes sense.

https://github.com/llvm/llvm-project/pull/115284