If the packet can't be parsed, the buffer isn't moved to the packet. Then, a new empty buffer is moved back from the packet. Thus, the consequtive DCHECK fails because the data isn't the same anymore. Bug: chromium:1009236 Change-Id: Ie27f438c40f38074d42d8491fe03df45d50eba50 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/155162 Commit-Queue: Ilya Nikolaevskiy <ilnik@webrtc.org> Reviewed-by: Danil Chapovalov <danilchap@webrtc.org> Cr-Commit-Position: refs/heads/master@{#29340}