Adds the missing tcptype to prflx tcp candidates as tcptype is mandatory per
RFC 6544 and if missing the candidate will contain double whitespace like this
... tcptype generation ...
and will get rejected by the internal parser
BUG=webrtc:11423
Change-Id: Id61babd85cf43d56e9e6f9bf30d4cc9e00f00f60
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/170442
Reviewed-by: Taylor <deadbeef@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Harald Alvestrand <hta@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#30959}
e283d1ca64