Panic when shutting down windowing by close button

[cybersoulK]

panicked at 'called `Result::unwrap()` on an `Err` value: "SendError(..)"', /Users/.../.cargo/registry/src/index.crates.io-6f17d22bba15001f/web-audio-api-0.36.1/src/context/concrete_base.rs:415:40

panicked at 'called `Result::unwrap()` on an `Err` value: "SendError(..)"', /Users/.../.cargo/registry/src/index.crates.io-6f17d22bba15001f/web-audio-api-0.36.1/src/context/concrete_base.rs:415:40

panicked at 'panic in a function that cannot unwind', library/core/src/panicking.rs:126:5
thread caused non-unwinding panic. aborting.

this happens when i shutdown the winit windowing by the close UI button,
but it does not happen when i close the terminal by Ctrl + C

might wanna use?

self.send_control_msg(message).ok();

[orottier]

Thanks. We should indeed not use unwrap here.
It's probably best if send_control_msg absorbs all SendErrors and logs a warning and, if not already the case, puts the context in Suspended state.
I probably have time to fix this near the end of the week, but feel free to submit a PR yourself earlier.

[orottier]

I have prepared a fix in #394