libavcodec/h264.c:1589: error: Uninitialized Value
  The value read from context_count was never initialized.

libavcodec/h264.c:1589:9: 
1587.         }
1588.     }
1589.     if (context_count)
              ^
1590.         ff_h264_execute_decode_slices(h, context_count);
1591. 
