libavcodec/h264_refs.c:502: error: Uninitialized Value
  The value read from pic was never initialized.

libavcodec/h264_refs.c:502:5: 
500.     int i, av_uninit(j);
501.     int current_ref_assigned=0, err=0;
502.     Picture *av_uninit(pic);
         ^
503. 
504.     if((s->avctx->debug&FF_DEBUG_MMCO) && mmco_count==0)
