libavcodec/hqx.c:591: error: Uninitialized Value
  The value read from slice_off[_] was never initialized.

libavcodec/hqx.c:591:13: 
589.         if (slice_off[slice] < HQX_HEADER_SIZE ||
590.             slice_off[slice] >= slice_off[slice + 1] ||
591.             slice_off[slice + 1] > data_size) {
                 ^
592.             av_log(avctx, AV_LOG_ERROR, "Invalid slice size.\n");
593.             break;
