UserMediaCaptureManagerProxy::SourceProxy destructor should remove itself as observer before invalidating its ring buffer storage Otherwise https://ews-build.s3-us-west-2.amazonaws.com/iOS-14-Simulator-WK2-Tests-EWS/r432882-17003/com.apple.WebKit.GPU.Development-3400-crash-log.txt
<rdar://problem/80178889>
Created attachment 432887 [details] Patch
Committed r279577 (239408@main): <https://commits.webkit.org/239408@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 432887 [details].