To make compilable without -DINET6.

PR:		bin/20407
Submitted by:	Patrick Bihan-Faou <patrick@mindstep.com>

usr.bin/netstat/inet6.c

@@ -40,6 +40,7 @@ static char sccsid[] = "@(#)inet6.c	8.4 (Berkeley) 4/20/94";
 */
 #endif /* not lint */
 
+#ifdef INET6
 #include <sys/param.h>
 #include <sys/socket.h>
 #include <sys/socketvar.h>
@@ -1045,3 +1046,4 @@ inet6name(in6p)
 				sizeof(ntop_buf)));
 	return (line);
 }
+#endif /*INET6*/

usr.bin/netstat/mroute6.c

@@ -67,6 +67,7 @@
  *	$FreeBSD$
  */
 
+#ifdef INET6
 #include <sys/param.h>
 #include <sys/queue.h>
 #include <sys/socket.h>
@@ -247,3 +248,4 @@ mrt6_stats(mstaddr)
 	    (unsigned long long)mrtstat.mrt6s_pkt2large,
 	    plural(mrtstat.mrt6s_pkt2large));
 }
+#endif /*INET6*/