Backport of "rtpvp8pay, rtpvp9pay: fix caps leak in set_caps()" into 1.16
Backport of !519 (merged) "rtpvp8pay, rtpvp9pay: fix caps leak in set_caps()".
Commits:
Backport of !519 (merged) "rtpvp8pay, rtpvp9pay: fix caps leak in set_caps()".
Commits: