libavcodec/bfi.c:98: error: Uninitialized Value
  The value read from offset was never initialized.

libavcodec/bfi.c:98:9: 
 96.     while (dst != frame_end) {
 97.         static const uint8_t lentab[4] = { 0, 2, 0, 1 };
 98.         unsigned int byte   = *buf++, av_uninit(offset);
             ^
 99.         unsigned int code   = byte >> 6;
100.         unsigned int length = byte & ~0xC0;
