[webrtc-pc] new commits pushed by aboba

The following commits were just pushed by aboba to https://github.com/w3c/webrtc-pc:

* Remove unneeded fallback state 'new' for create an RTCSctpTransport

The algorithm only ever calls it with a defined initial state, and the state enum doesn't include (or need) new at this stage
close #2422
  by Dominique Hazael-Massieux
https://github.com/w3c/webrtc-pc/commit/d4f689dcb18b3a4e6e934e65cf30e2d13729444c

* Merge pull request #2435 from w3c/issue-2422

Remove unneeded fallback state 'new' for create an RTCSctpTransport
  by Bernard Aboba
https://github.com/w3c/webrtc-pc/commit/fbb155469d4c04f80321c4d963c40134da024002