rtph264pay: unbreak au aligned byte-stream payloading
rtph264pay: unbreak au aligned byte-stream payloading

surround-io/gst-plugins-good,jpakkane/gstreamer-plugins-good,jpakkane/gstreamer-plugins-good,surround-io/gst-plugins-good,vatavuserban/gst-plugins-good,vatavuserban/gst-plugins-good,ndufresne/gst-plugins-good,ndufresne/gst-plugins-good,ndufresne/gst-plugins-good,vatavuserban/gst-plugins-good,jpakkane/gstreamer-plugins-good,surround-io/gst-plugins-good,wkatsak/gst-plugins-good,wkatsak/gst-plugins-good,wkatsak/gst-plugins-good,jpakkane/gstreamer-plugins-good,wkatsak/gst-plugins-good,ndufresne/gst-plugins-good,vatavuserban/gst-plugins-good,surround-io/gst-plugins-good