The cumulative number of packets lost in a RTCP sender report can be
negative if there are duplicates. This CL fixes a bug that the parser of
RTCP reports treats the field as an unsigned integer, and incorrectly
reports large packet losses when a negative loss is reported.
Bug: webrtc:9601
Change-Id: I1109ac0741614d61bda743e13a390b7d3e147a9c
Reviewed-on: https://webrtc-review.googlesource.com/92942
Reviewed-by: Danil Chapovalov <danilchap@webrtc.org>
Reviewed-by: Sebastian Jansson <srte@webrtc.org>
Commit-Queue: Qingsi Wang <qingsi@google.com>
Cr-Commit-Position: refs/heads/master@{#24234}