fix Ogg/FLAC header size

Originally committed as revision 12626 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/oggenc.c

@@ -88,8 +88,8 @@ static int ogg_build_flac_headers(const uint8_t *extradata, int extradata_size,
     uint8_t *p;
     if (extradata_size != 34)
         return -1;
-    oggstream->header_len[0] = 79;
+    oggstream->header_len[0] = 51;
-    oggstream->header[0] = av_mallocz(79); // per ogg flac specs
+    oggstream->header[0] = av_mallocz(51); // per ogg flac specs
     p = oggstream->header[0];
     bytestream_put_byte(&p, 0x7F);
     bytestream_put_buffer(&p, "FLAC", 4);

tests/libav.regression.ref

@@ -84,8 +84,8 @@ ae3a23a7ea13c92a2909445ca8144dcd *./tests/data/b-libav.aif
 8d117c49d6b210abe783d1b0b897cec7 *./tests/data/b-libav.voc
   32768 ./tests/data/b-libav.voc
 ./tests/data/b-libav.voc CRC=0x49972c8c
-d7e6e9091a600b7208b29500be94aa89 *./tests/data/b-libav.ogg
+8ac1fa6e0ee5d47ea98aea17b67d5908 *./tests/data/b-libav.ogg
-23624 ./tests/data/b-libav.ogg
+23596 ./tests/data/b-libav.ogg
 ./tests/data/b-libav.ogg CRC=0x93baa056
 ce356ce2708cb6033ab5d762da93cfd4 *./tests/data/b-libav-yuv420p.yuv
  304128 ./tests/data/b-libav-yuv420p.yuv