Fix a typo that stopped ypset's -h option from working with a

hostname rather than an IP. The code was copying the pointer to the
IP address instead of the IP address itself. The bug has existed
ever since ypset was first imported in 1994.

PR:		bin/62550
Submitted by:	aardvark@saintaardvarkthecarpeted.com
MFC after:	1 week

usr.sbin/ypset/ypset.c

@@ -134,7 +134,7 @@ main(int argc, char *argv[])
 				hent = gethostbyname(optarg);
 				if (hent == NULL)
 					errx(1, "host %s unknown", optarg);
-				bcopy(&hent->h_addr_list[0], &sin.sin_addr,
+				bcopy(hent->h_addr_list[0], &sin.sin_addr,
 					sizeof sin.sin_addr);
 			}
 			break;