Since RTPHeader contains std::string members, memset results in undefined behavior, with memory leaks being the best case. Bug: chromium:945598 Change-Id: I5c04e6b2fb08816fc036abfbb6ba7aaf19469687 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/129720 Reviewed-by: Danil Chapovalov <danilchap@webrtc.org> Commit-Queue: Niels Moller <nisse@webrtc.org> Cr-Commit-Position: refs/heads/master@{#27282}