rustc error in latest 0.4.0 release

[inodentry]

   Compiling oboe v0.4.0
error: attribute must be applied to a `static` variable
   --> /home/jamadazi/.cargo/registry/src/github.com-1ecc6299db9ec823/oboe-0.4.0/src/audio_stream.rs:625:5
    |
625 |     #[used]
    |     ^^^^^^^

error: aborting due to previous error

error: could not compile `oboe`

Using oboe from git does not produce this error, so looks like it has been fixed already, but not in a release version.

Please consider making a patch release with the fix.

[katyo]

Already fixed.