libavcodec/bfi.c:100: error: Uninitialized Value
  The value read from offset was never initialized.

libavcodec/bfi.c:100:9: 
 98.     while (dst != frame_end) {
 99.         static const uint8_t lentab[4] = { 0, 2, 0, 1 };
100.         unsigned int byte   = bytestream2_get_byte(&g), av_uninit(offset);
             ^
101.         unsigned int code   = byte >> 6;
102.         unsigned int length = byte & ~0xC0;
