Backport of "splitmuxsink: Avoid deadlock when releasing a pad from a running muxer" into 1.18
requested to merge tpm/gst-plugins-good:backport-mr-838-into-1.18-splitmuxsink_running_release into 1.18
Backport of !838 (merged) "splitmuxsink: Avoid deadlock when releasing a pad from a running muxer".
Commits:
- 81d2f67b splitmuxsink: Avoid deadlock when releasing a pad from a running muxer