Fix rtaudio reconnection issue

The rtaudio consumer patch fixes an issue when trying to reconnect the consumer with a different producer, can be reproducer in shotcut when changing from one clip to another, the sound stops working with following error:

[consumer rtaudio] RtApi::openStream: a stream is already open!

My patch fixes the problem and allows to switch producers without losing audio.

Also included is a minor fix to count producer yml data