codec: rawvideo: set pf_flush callback for packetizer

Signed-off-by: Thomas Guillem <thomas@gllm.fr>

modules/codec/rawvideo.c

@@ -308,7 +308,10 @@ static int OpenPacketizer( vlc_object_t *p_this )
 
     int ret = OpenCommon( p_dec );
     if( ret == VLC_SUCCESS )
+    {
         p_dec->pf_packetize = SendFrame;
+        p_dec->pf_flush = Flush;
+    }
     return ret;
 }