Fix for image generation when not using image library
Fix for image generation when not using image library

git-svn-id: 3a2b3c0c6408444eb393e4809cfd02012a73951b@7 c3bc8be1-34fa-9c36-a2fb-426576a0a886

designondemand/animalcaptcha,designondemand/animalcaptcha