The KAME's getipnodebyaddr() code honor the MULTI_PTRS_ARE_ALIASES

define also, but res_config.h was not included into libc/net/name6.c.
So getipnodebyaddr() ignored the multiple PTRs.

PR:		kern/88241
Submitted by:	Dan Lukes <dan__at__obluda.cz>
MFC after:	3 days

lib/libc/net/name6.c

@@ -121,6 +121,7 @@ __FBSDID("$FreeBSD$");
 #include <unistd.h>
 #include "un-namespace.h"
 #include "netdb_private.h"
+#include "res_config.h"
 
 #ifndef _PATH_HOSTS
 #define	_PATH_HOSTS	"/etc/hosts"