Backport of "rtpvp8depay: Fix crash when making 'GstRTPPacketLost' custom event" into 1.20
Backport of !1918 (merged) "rtpvp8depay: Fix crash when making 'GstRTPPacketLost' custom event".
Commits:
- faafbb9f rtpvp8depay: Fix crash when making 'GstRTPPacketLost' custom event