libavcodec/bfi.c:128: error: Uninitialized Value
  The value read from offset was never initialized.

libavcodec/bfi.c:128:13: 
126. 
127.         case 1:                //Back Chain
128.             dst_offset = dst - offset;
                 ^
129.             length *= 4;        //Convert dwords to bytes.
130.             if (dst_offset < bfi->dst)
