libbb: add strncpy_IFNAMSIZ

function                                             old     new   delta
...
udhcp_read_interface                                 225     220      -5
brctl_main                                          1151    1146      -5
add_interface                                        109     104      -5
ipaddr_list_or_flush                                2174    2167      -7
do_add_ioctl                                          88      80      -8
vconfig_main                                         249     240      -9
do_del_ioctl                                          78      68     -10
do_iplink                                           1186    1173     -13
do_if_fetch                                          766     753     -13
buffer_fill_and_print                                196     179     -17
parse_args                                          1709    1684     -25
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/20 up/down: 11/-140)         Total: -129 bytes


diff --git a/e2fsprogs/old_e2fsprogs/uuid/gen_uuid.c b/e2fsprogs/old_e2fsprogs/uuid/gen_uuid.c
index 03a9f37..4310c17 100644
--- a/e2fsprogs/old_e2fsprogs/uuid/gen_uuid.c
+++ b/e2fsprogs/old_e2fsprogs/uuid/gen_uuid.c
@@ -165,7 +165,7 @@
 	n = ifc.ifc_len;
 	for (i = 0; i < n; i+= ifreq_size(*ifrp) ) {
 		ifrp = (struct ifreq *)((char *) ifc.ifc_buf+i);
-		strncpy(ifr.ifr_name, ifrp->ifr_name, IFNAMSIZ);
+		strncpy_IFNAMSIZ(ifr.ifr_name, ifrp->ifr_name);
 #ifdef SIOCGIFHWADDR
 		if (ioctl(sd, SIOCGIFHWADDR, &ifr) < 0)
 			continue;