[llvm] [llvm-nm] Fix heap-use-after-free while executing 'llvm-nm -n --export-symbols' (PR #65668)

[Fangrui Song via llvm-commits]

MaskRay wrote:

@tstellar It seems that https://github.com/orgs/llvm/teams/pr-subscribers-llvm-binary-utilities cannot be added as a reviewer. Perhaps the team hasn't been properly set?

https://github.com/llvm/llvm-project/pull/65668