Fix the over creation of AudioContexts.

packages/rocketchat-webrtc/WebRTCClass.coffee

@@ -228,10 +228,10 @@ class WebRTCClass
 		if @active isnt true or @monitor is true or @remoteMonitoring is true then return
 
 		remoteConnections = []
-		for id, peerConnections of @peerConnections
+		for id, peerConnection of @peerConnections
 			remoteConnections.push
 				id: id
-				media: peerConnections.remoteMedia
+				media: peerConnection.remoteMedia
 
 		@transport.sendStatus
 			media: @media
@@ -340,6 +340,8 @@ class WebRTCClass
 				stream.addTrack(peer.stream.getAudioTracks()[0])
 				stream.volume = volume
 
+				this.audioContext = audioContext
+
 			onSuccess(stream)
 
 		navigator.getUserMedia media, onSuccessLocal, onError
@@ -461,7 +463,8 @@ class WebRTCClass
 
 	stopAllPeerConnections: ->
 		for id, peerConnection of @peerConnections
-				@stopPeerConnection id
+			@stopPeerConnection id
+		window.audioContext.close()
 
 	setAudioEnabled: (enabled=true) ->
 		if @localStream?