size = (pixbuf->height - 1) * pixbuf->rowstride +
pixbuf->width * ((pixbuf->n_channels * pixbuf->bits_per_sample + 7) >> 3);
- result->pixels = art_alloc (size);
+ result->pixels = (art_u8*)art_alloc (size);
memcpy (result->pixels, pixbuf->pixels, size);
result->width = pixbuf->width;