fix msmpeg4v3 tag in asf

Originally committed as revision 7606 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/asf-enc.c

@@ -190,7 +190,6 @@
 static const AVCodecTag codec_asf_bmp_tags[] = {
     { CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
     { CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
-    { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '3') },
     { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
     { CODEC_ID_NONE, 0 },
 };

tests/libav.regression.ref

@@ -2,7 +2,7 @@ ffmpeg regression test
 8a0536ccfe36f4fff408b3327d33e1dd *./data/b-libav.avi
 340344 ./data/b-libav.avi
 ./data/b-libav.avi CRC=0x400c29e9
-85caa242a36abeab85a27c82ba73cc28 *./data/b-libav.asf
+a46c4f3fc33587cbb644363066281424 *./data/b-libav.asf
 339767 ./data/b-libav.asf
 ./data/b-libav.asf CRC=0x74113749
 1ad618e9fd318eb3483270cf9b9b3f43 *./data/b-libav.rm