change audio codec id to mp2

Originally committed as revision 11426 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/pva.c

@@ -52,7 +52,7 @@ static int pva_read_header(AVFormatContext *s, AVFormatParameters *ap) {
     if (!(st = av_new_stream(s, 1)))
         return AVERROR(ENOMEM);
     st->codec->codec_type = CODEC_TYPE_AUDIO;
-    st->codec->codec_id   = CODEC_ID_MP3;
+    st->codec->codec_id   = CODEC_ID_MP2;
     st->need_parsing      = AVSTREAM_PARSE_HEADERS;
     av_set_pts_info(st, 33, 1, 90000);