Firefox crash when running cubeb-coreaudio-rs ./run_tests.sh

[padenot]

STR on an M1 Max (not sure if relevant):

• Play audio in Firefox, using the Web Audio API (I was playing something on soundcloud)
• Run the tests via the wrapper script: ./run_tests.sh

Expected:

• It messes up the audio, because it changes the default audio output device a few times, etc.

Actual:

• It messes up the audio, and then Firefox crashes, here's a report: https://crash-stats.mozilla.org/report/index/ec88b375-440d-4d32-9c74-93f7b0220412. It's probably crashing on https://hg.mozilla.org/mozilla-central/file/872b574394a6e1f97ed229b6d2d9a3fa5bbac298/third_party/rust/cubeb-coreaudio/src/backend/mod.rs#l1258, more or less the same as https://bugzilla.mozilla.org/show_bug.cgi?id=1762563#c1.

I think we need to stop putting in asserts like this, it's really annoying to crash on something like that. It's a lot better to simply rely on the system erroring out and this crate or Firefox dealing with the error.

[padenot]

Might be the same fix as #171.