`audio_wasapi.rs` is mounted as `crate::audio` (lib.rs, `#[cfg(windows)]
#[path = "audio_wasapi.rs"] pub mod audio;`), so there is no `crate::audio_wasapi`
path to reach it by. `pad_audio.rs` used one anyway, which means pf-client-core has
not compiled for Windows since 35285afa landed in the pad-audio merge (8983ec04) —
E0433, so every Windows client build on main is red, not just this call site.
Found while validating the FFmpeg bump on the CI runner; unrelated to it, hence its
own commit.
enricobuehler
d6b9462092