Fix winapi error

[epompeii]

I get an error when running on Windows:

error[E0432]: unresolved import `winapi::shared::winerror`

Repro in this job: https://github.com/bencherdev/bencher/actions/runs/7432835880/job/20225107491#step:8:443

The fix for this is simple, adding winerror as a feature for winapi.

Let me know if you would like for me to create a follow on PR to add Windows builds to CI.

[fussybeaver]

Thanks for using it, let me fix CI that is failing on something unrelated and we can get this merged.

[fussybeaver]

I you could rebase, we can get the other tests to pass

[epompeii]

No worries, thank you for the great crate! 😃
I've rebased on the latest master. Hopefully that works.