gxf: Factorize code in get_sindex()

Reviewed-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavformat/gxf.c

@@ -116,11 +116,8 @@ static int get_sindex(AVFormatContext *s, int id, int format) {
             st->codec->codec_id = AV_CODEC_ID_MJPEG;
             break;
         case 13:
-        case 15:
-            st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
-            st->codec->codec_id = AV_CODEC_ID_DVVIDEO;
-            break;
         case 14:
+        case 15:
         case 16:
         case 25:
             st->codec->codec_type = AVMEDIA_TYPE_VIDEO;