[libc-commits] [libc] [libc] add missing header to alloc-checker (PR #173400)

[Jordan Rupprecht via libc-commits]

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

I wonder if you need to add a build dep to the bazel target after this. The .h changes LGTM though.

https://github.com/llvm/llvm-project/pull/173400