Prevent memory corruption by StreamId::Set

Use RTC_CHECK to crash if attempting to set an RSID whose name's length exceeds the maximum.

BUG=None

Review-Url: https://codereview.webrtc.org/2915913003
Cr-Original-Commit-Position: refs/heads/master@{#18405}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 4a3c9f60a39b82ef27bd4582c088fa5af5a24566
1 file changed