Loosen the restrictions for ice-char by also allowing
'#' (known to break) and '_' (urlsafe base64) in addition
to the existing exceptions for '-' and '='.
Also fixes typo in log message.
BUG=chromium:1053756
Change-Id: I8f254a7c25f780276452fa3e27245b6b7ad1a3ce
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/168943
Reviewed-by: Steve Anton <steveanton@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Steve Anton <steveanton@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#30596}
98d5bbba58