Backport of "dtls: fix dtls connection object leak" into 1.16
requested to merge tpm/gst-plugins-bad:backport-mr-489-into-1.16-codinho-master-patch-07929 into 1.16
Backport of !489 (merged) "dtls: fix dtls connection object leak".
Commits:
- aa0dea09 dtls: fix dtls connection object leak