calloc for consisten alloc/free with XDestroyImage, makes valgrind happy
calloc for consisten alloc/free with XDestroyImage, makes valgrind happy

luebking/fluxbox,olivergondza/fluxbox,lukoko/fluxbox,lukoko/fluxbox,luebking/fluxbox,naimdjon/fluxbox,lukoko/fluxbox,Arkq/fluxbox,naimdjon/fluxbox,lukoko/fluxbox,olivergondza/fluxbox,Arkq/fluxbox,Arkq/fluxbox,olivergondza/fluxbox,naimdjon/fluxbox,lukoko/fluxbox,Arkq/fluxbox,olivergondza/fluxbox,naimdjon/fluxbox,naimdjon/fluxbox,olivergondza/fluxbox,luebking/fluxbox,luebking/fluxbox,luebking/fluxbox,Arkq/fluxbox