The HandleXr method has output arguments that are not set when an RTCP
report cannot be parsed. We should give these a sensible default value
to avoid accessing uninitialized memory
Bug: chromium:1247182
Change-Id: I6c54260aef3834643c41b96c0709489522d82533
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/231237
Commit-Queue: Ivo Creusen <ivoc@webrtc.org>
Reviewed-by: Danil Chapovalov <danilchap@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#34943}