avformat/wavdec: Increase dts packet threshold to fix more misdetections

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 40a3e1e9)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavformat/wavdec.c

@@ -114,7 +114,7 @@ static void handle_stream_probing(AVStream *st)
 {
     if (st->codec->codec_id == AV_CODEC_ID_PCM_S16LE) {
         st->request_probe = AVPROBE_SCORE_EXTENSION;
-        st->probe_packets = FFMIN(st->probe_packets, 20);
+        st->probe_packets = FFMIN(st->probe_packets, 32);
     }
 }