Backport of "splitmuxsink: fix sink pad release while PLAYING" into 1.18
requested to merge tpm/gst-plugins-good:backport-mr-719-into-1.18-splitmuxsink-fix-pad-release into 1.18
Backport of !719 (merged) "splitmuxsink: fix sink pad release while PLAYING".
Commits:
- 19860200 splitmuxsink: fix sink pad release while PLAYING