Rotation of an image of size 0 causes segfault.
Imported from http://bugzilla.roxen.com/bugzilla/show_bug.cgi?id=1076
Reported by Anders Johansson anders@roxen.com
Pike v7.0 release 141 running Hilfe v2.0 (Incremental Pike Frontend)
> Image.Image(17,0)->rotate(17);
zsh: 32118 segmentation fault (core dumped) pike