flvdec: disable new midstream param change code not only for h264 but all cases.

It breaks some samples and iam not aware of one that it fixes.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavformat/flvdec.c

@@ -581,7 +581,7 @@ static int flv_read_packet(AVFormatContext *s, AVPacket *pkt)
             if (flv->wrong_dts)
                 dts = AV_NOPTS_VALUE;
         }
-        if (type == 0 && (!st->codec->extradata || st->codec->codec_id != CODEC_ID_H264)) {
+        if (type == 0 && !st->codec->extradata) {
             if (st->codec->extradata) {
                 if ((ret = flv_queue_extradata(flv, s->pb, stream_type, size)) < 0)
                     return ret;