[libvirt] nss build failure on arm32

Just a note, I'm getting build failures with the nss module on Fedora 23 arm 32bit: nss/libvirt_nss.c: In function '_nss_libvirt_gethostbyname3_r': nss/libvirt_nss.c:325:17: error: cast increases required alignment of target type [-Werror=cast-align] r_aliases = (char **) buffer + idx; ^ nss/libvirt_nss.c:336:19: error: cast increases required alignment of target type [-Werror=cast-align] r_addr_list = (char **) buffer + idx; ^ nss/libvirt_nss.c: In function '_nss_libvirt_gethostbyname4_r': nss/libvirt_nss.c:427:21: error: cast increases required alignment of target type [-Werror=cast-align] r_tuple_first = (struct gaih_addrtuple*) (buffer + idx); ^ nss/libvirt_nss.c:431:19: error: cast increases required alignment of target type [-Werror=cast-align] r_tuple = (struct gaih_addrtuple*) (buffer + idx); ^ nss/libvirt_nss.c:435:29: error: cast increases required alignment of target type [-Werror=cast-align] r_tuple->next = (struct gaih_addrtuple*) ((char*) r_tuple + ALIGN(sizeof(struct gaih_addrtuple))); - Cole