rtpjitterbuffer: don't stop looping if event found in the queue
rtpjitterbuffer: don't stop looping if event found in the queue

If we are inserting a packet into the jitter queue we need to keep
looping through the items until the right position is found. Currently,
the code stops as soon as an event is found in the queue.

Regarding events, we should only move packets before an event if there
is another packet before the event that has a larger seqnum.

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=730078

GrokImageCompression/gst-plugins-good,chamois94/gst-plugins-good,kittee/gst-plugins-good,ikonst/gst-plugins-good,greg80303/gst-plugins-good,surround-io/gst-plugins-good,ndufresne/gst-plugins-good,sh0/gst-plugins-good,Lachann/gst-plugins-good,veo-labs/gst-plugins-good,wkatsak/gst-plugins-good,loshca/gst-plugins-good,froggatt/gst-plugins-good-m,GrokImageCompression/gst-plugins-good,chamois94/gst-plugins-good,jpakkane/gstreamer-plugins-good,rawoul/gst-plugins-good,GrokImageCompression/gst-plugins-good,pexip/gst-plugins-good,froggatt/gst-plugins-good-m,vatavuserban/gst-plugins-good,Kurento/gst-plugins-good,greg80303/gst-plugins-good,GStreamer/gst-plugins-good,rawoul/gst-plugins-good,hizukiayaka/gst-plugins-good,froggatt/gst-plugins-good-m,ikonst/gst-plugins-good,stfl/gst-plugins-good,hizukiayaka/gst-plugins-good,ikonst/gst-plugins-good,jpakkane/gstreamer-plugins-good,sh0/gst-plugins-good,shelsonjava/gst-plugins-good,Kurento/gst-plugins-good,vatavuserban/gst-plugins-good,greg80303/gst-plugins-good,freedesktop-unofficial-mirror/gstreamer__gst-plugins-good,StreamUtils/gst-plugins-good,pexip/gst-plugins-good,ijsf/OpenWebRTC-gst-plugins-good,BigBrother-International/gst-plugins-good,sebras/gst-plugins-good,ikonst/gst-plugins-good,jpakkane/gstreamer-plugins-good,pexip/gst-plugins-good,sebras/gst-plugins-good,Kurento/gst-plugins-good,shelsonjava/gst-plugins-good,GStreamer/gst-plugins-good,GStreamer/gst-plugins-good,veo-labs/gst-plugins-good,jcaden/gst-plugins-good,ndufresne/gst-plugins-good,chamois94/gst-plugins-good,hizukiayaka/gst-plugins-good,veo-labs/gst-plugins-good,Lachann/gst-plugins-good,kittee/gst-plugins-good,vatavuserban/gst-plugins-good,Kurento/gst-plugins-good,jpakkane/gstreamer-plugins-good,pexip/gst-plugins-good,BigBrother-International/gst-plugins-good,sebras/gst-plugins-good,freedesktop-unofficial-mirror/gstreamer__gst-plugins-good,kittee/gst-plugins-good,StreamUtils/gst-plugins-good,ndufresne/gst-plugins-good,ijsf/OpenWebRTC-gst-plugins-good,jcaden/gst-plugins-good,wkatsak/gst-plugins-good,kittee/gst-plugins-good,pexip/gst-plugins-good,wkatsak/gst-plugins-good,loshca/gst-plugins-good,GStreamer/gst-plugins-good,chamois94/gst-plugins-good,surround-io/gst-plugins-good,loshca/gst-plugins-good,sh0/gst-plugins-good,rawoul/gst-plugins-good,Lachann/gst-plugins-good,ndufresne/gst-plugins-good,sh0/gst-plugins-good,StreamUtils/gst-plugins-good,BigBrother-International/gst-plugins-good,stfl/gst-plugins-good,surround-io/gst-plugins-good,veo-labs/gst-plugins-good,rawoul/gst-plugins-good,freedesktop-unofficial-mirror/gstreamer__gst-plugins-good,loshca/gst-plugins-good,stfl/gst-plugins-good,hizukiayaka/gst-plugins-good,BigBrother-International/gst-plugins-good,vatavuserban/gst-plugins-good,GrokImageCompression/gst-plugins-good,jcaden/gst-plugins-good,froggatt/gst-plugins-good-m,ijsf/OpenWebRTC-gst-plugins-good,ijsf/OpenWebRTC-gst-plugins-good,jcaden/gst-plugins-good,shelsonjava/gst-plugins-good,surround-io/gst-plugins-good,Kurento/gst-plugins-good,greg80303/gst-plugins-good,stfl/gst-plugins-good,Lachann/gst-plugins-good,sebras/gst-plugins-good,StreamUtils/gst-plugins-good,shelsonjava/gst-plugins-good,wkatsak/gst-plugins-good,freedesktop-unofficial-mirror/gstreamer__gst-plugins-good