Fix OpenSLES cleanup on Android

[Alex2782]

Fixes the following error output:

I'm not sure if this is critical. This happens when the app is terminated via the "BACK" button. On Android, however, the app is not completely terminated, the app is still in the app list in the background and can be restarted.

[AThousandShips]

See also:

• Android: Ensure cleanup of all subobjects in the OpenSL audio driver #85955

[Alex2782]

I think it can be closed here, the extensions from @PierceLBrooks look more extensive.

destroy

We recommend that you explicitly set both the primary object interface and all associated interfaces to NULL as part of your object destruction sequence, which prevents the accidental misuse of a stale interface handle.

Pierce did that too

[Alex2782]

--> #85955