libavcodec/hevc.c:1724: error: Uninitialized Value
  The value read from ref1 was never initialized.

libavcodec/hevc.c:1724:14: 
1722.         DECLARE_ALIGNED(16, int16_t, tmp2[MAX_PB_SIZE * MAX_PB_SIZE]);
1723. 
1724.         if (!ref1)
                   ^
1725.             return;
1726. 
