avformat/mpegts: Only start probing data streams within probe_packets

Fixes assertion failure
Fixes: 4321db8ac331f5967ebfbfe80ce5eb78/signal_sigabrt_7ffff6ae7cc9_7213_0d6457b9d6897fa7c78507fa5de53510.ts

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 3692d859f4)

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavformat/mpegts.c

@@ -841,6 +841,7 @@ static int mpegts_set_stream_info(AVStream *st, PESContext *pes,
     if ((st->codec->codec_id == AV_CODEC_ID_NONE ||
             (st->request_probe > 0 && st->request_probe < AVPROBE_SCORE_STREAM_RETRY / 5)) &&
         !avcodec_is_open(st->codec) &&
+        st->probe_packets > 0 &&
         stream_type == STREAM_TYPE_PRIVATE_DATA) {
         st->codec->codec_type = AVMEDIA_TYPE_DATA;
         st->codec->codec_id   = AV_CODEC_ID_BIN_DATA;