Should use the system copy, or giflib if available.
*libafterimage-1.18-r1 (17 Jan 2009) 17 Jan 2009; Markus Meier <maekke@gentoo.org> +files/libafterimage-1.18-glx.patch, +libafterimage-1.18-r1.ebuild: fix x11-terms/rxvt-unicode segfault by Martin von Gagern in bug #252651; don't use internal copy of libungif wrt bug #252917