[BUGFIX] check for false from imageMagickExec - #25

[BUGFIX] check for false from imageMagickExec#25

ulrichmathes merged 4 commits into

mainsitegeist/image-jack:mainfrom

24-typeerror-on-webptemplateconvertimageusingimsitegeist/image-jack:24-typeerror-on-webptemplateconvertimageusingimCopy head branch name to clipboard