zelll

I could not get expected result from spreadImage() on a Gentoo server. It runs php 7.2 and imagick 3.4.3 and imagemagick 7.0.7 . See [imagick_class.c](https://github.com/mkoppanen/imagick/blob/master/imagick_class.c#L4040), `status = MagickSpreadImage(intern->magick_wand, radius, method);`...