avcodec/bitstream: remove unused variable

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/bitstream.c

@@ -108,7 +108,6 @@ static int alloc_table(VLC *vlc, int size, int use_static)
 
     vlc->table_size += size;
     if (vlc->table_size > vlc->table_allocated) {
-        int err;
         if (use_static)
             abort(); // cannot do anything, init_vlc() is used with too little memory
         vlc->table_allocated += (1 << vlc->bits);