Fix the L2 address printed in the "arp: %s moved from %*D" message.

In the r292978 struct llentry was changed and the ll_addr field become
the pointer.

PR:		217667
MFC after:	1 week

sys/netinet/if_ether.c

@@ -1203,7 +1203,7 @@ arp_check_update_lle(struct arphdr *ah, struct in_addr isaddr, struct ifnet *ifp
 			    "to %*D on %s\n",
 			    inet_ntoa_r(isaddr, addrbuf),
 			    ifp->if_addrlen,
-			    (u_char *)&la->ll_addr, ":",
+			    (u_char *)la->ll_addr, ":",
 			    ifp->if_addrlen, (u_char *)ar_sha(ah), ":",
 			    ifp->if_xname);
 		}