ffmpeg_modify_opus_pvq.patch

--- a/ffmpeg/libavcodec/opus_pvq.c
+++ b/ffmpeg/libavcodec/opus_pvq.c 
@@ -22,13 +22,14 @@
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #include "opustab.h"
 #include "opus_pvq.h"
-
+#undef B0
+
 #define CELT_PVQ_U(n, k) (ff_celt_pvq_u_row[FFMIN(n, k)][FFMAX(n, k)])
 #define CELT_PVQ_V(n, k) (CELT_PVQ_U(n, k) + CELT_PVQ_U(n, (k) + 1))
 
 static inline int16_t celt_cos(int16_t x)
 {
     x = (MUL16(x, x) + 4096) >> 13;