[webrtc-pc] addIceCandidate end of candidates woes

fippo has just created a new issue for https://github.com/w3c/webrtc-pc:

== addIceCandidate end of candidates woes ==
there has been much back-and-forth on this... @taylor-b you might know.
How do I make an end-of-candidates indications for all transports that need one?

http://w3c.github.io/webrtc-pc/#dom-rtcpeerconnection-addicecandidate
> If candidate.candidate is an empty string, process candidate as an end-of-candidates indication for the corresponding media description and ICE candidate generation.
This assumes a end of candidates indication for a particular sdpMid/sdpMLineIndex however.

However, http://w3c.github.io/webrtc-pc/#dom-rtcpeerconnectioniceevent still says that the candidate (and therefore the sdpMId and sdpMLineIndex) is null on end-of-candidates and there is only one.

Please view or discuss this issue at https://github.com/w3c/webrtc-pc/issues/1213 using your GitHub account