OnSctpInboundPacket is called not only for incoming packets, but for
notifications, which can be delivered on the usrsctp timer thread.
I suspect that these notifications can be delivered after we attempt to
close the socket, because if we attempt to close it while the timer
thread holds a reference, it isn't actually destroyed until the timer
thread finishes its operation.
Bug: chromium:1127774
Change-Id: Id6a883b14796e8f5bf1c2990f3d9d389d72c8a46
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/184240
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Taylor <deadbeef@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#32204}
9def3ff4a3