broadcast.go: transition to inactive at end time

[Saxon Milton]

As it is now the stream continues to be active once the video stream has stopped, resulting in a “live” youtube stream with no incoming data (circle loading bar). We should transition the broadcast state to inactive once we’re done with the streaming.

[Saxon Milton]

This can be achieved by transition to “complete” status. See here for more information on transition.

[Saxon Milton]

Resolved by PR #153