png_end_callback   (png_structp png_read_ptr,
                    png_infop   png_info_ptr)
{
        LoadContext* lc;

        lc = png_get_progressive_ptr(png_read_ptr);

        if (lc->fatal_error_occurred)
                return;
}
png_end_callback   (png_structp png_read_ptr,
                    png_infop   png_info_ptr)
{
        LoadContext* lc;

        lc = png_get_progressive_ptr(png_read_ptr);

        if (lc->fatal_error_occurred)
                return;
}