attempt to regularize atoi mess.
diff --git a/util-linux/ipcs.c b/util-linux/ipcs.c
index 5e58e81..ba81ea9 100644
--- a/util-linux/ipcs.c
+++ b/util-linux/ipcs.c
@@ -581,7 +581,7 @@
 
 	opt = getopt32(argc, argv, "i:aqsmtcplu", &opt_i);
 	if (opt & 0x1) { // -i
-		id = atoi(opt_i);
+		id = xatoi(opt_i);
 		flags |= flag_print;
 	}
 	if (opt & 0x2) flags |= flag_msg | flag_sem | flag_shm; // -a