[libcxx-commits] [libcxx] [libc++][test] Fix size calculation for `unordered_map` in ABI test (PR #157006)

[Nikolas Klauser via libcxx-commits]

https://github.com/philnik777 approved this pull request.

LGTM assuming the CI is happy.

https://github.com/llvm/llvm-project/pull/157006