[magick-users] Problem with MagickGetImageResolution

[arcanaimperii at imagemagick.org]

> double* x_buffer;
> double* y_buffer;
>  MagickGetImageResolution(wand_image_attr, x_buffer, y_buffer);

Try this instead:

  double x,y;
  MagickGetImageResolution(wand_image_attr, &x, &y);