Off-by-two in mpegts.c patch by (Wolfram Gloger <wmglo at dent dot med dot uni-muenchen dot de>)

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@3011 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavformat/mpegts.c

@@ -1467,7 +1467,7 @@ int mpegts_parse_packet(MpegTSContext *ts, AVPacket *pkt,
         if (len < TS_PACKET_SIZE)
             return -1;
         if (buf[0] != 0x47) {
-            buf--;
+            buf++;
             len--;
         } else {
             handle_packet(ts, buf);