This is a follow-up to change 232904 that also validates that the
timestamp from the heartbeat ack isn't negative (which the fuzzer
managed to set it to).
Bug: chromium:1252515
Change-Id: Idaac570589dbdaaee67b7785f6232b60226e88e1
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/234582
Reviewed-by: Florent Castelli <orphis@webrtc.org>
Commit-Queue: Victor Boivie <boivie@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#35168}
3179fb2931