Incorrect iterator++ in ModuleRtpRtcpImpl::RegisterVideoBitrateObserver

The iterator is incremented both in loop header and loop body. Should
only be incremented in header.

BUG=2727
R=mflodman@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/5899004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@5295 4adac7df-926f-26a2-2b94-8c16560cd09d
1 file changed