* src/grepmap.c (main): Return 2 in case of error. * src/ieee1394map.c (ieee1394map_modules): Return 2 if arguments weren't in the right format. * src/inputmap.c (inputmap_modules): Return 2 also. * src/pcimap.c (pcimap_modules): Also return 2. * src/usbmap.c (usbmap_modules): And here 2 ;-)