Fixed event registration on MediaStreamSource object so that the event handlers are removed in the "closed" event.
Fixed event registration on MediaStreamSource object so that the event handlers are removed in the "closed" event.

avranju/AudioPlayerWithCustomStream,MavenRain/AudioPlayerWithCustomStream,avranju/AudioPlayerWithCustomStream,MavenRain/AudioPlayerWithCustomStream,MavenRain/AudioPlayerWithCustomStream,MavenRain/AudioPlayerWithCustomStream,MavenRain/AudioPlayerWithCustomStream,avranju/AudioPlayerWithCustomStream