One more rtfree(9)

[Martin Pieuchot]

We're sure the parent is alive when a cloned route is removed from the
table because removing the parent kill all the children.

Ok?

Index: net/route.c
===================================================================
RCS file: /cvs/src/sys/net/route.c,v
retrieving revision 1.230
diff -u -p -r1.230 route.c
--- net/route.c 4 Sep 2015 08:43:39 -0000       1.230
+++ net/route.c 10 Sep 2015 08:21:24 -0000
@@ -830,15 +830,11 @@ rtrequest1(int req, struct rt_addrinfo *
                if ((rt->rt_flags & RTF_CLONING) != 0)
                        rtflushclone(tableid, rt);
 
-               if (rt->rt_gwroute) {
-                       rtfree(rt->rt_gwroute);
-                       rt->rt_gwroute = NULL;
-               }
+               rtfree(rt->rt_gwroute);
+               rt->rt_gwroute = NULL;
 
-               if (rt->rt_parent) {
-                       rt->rt_parent->rt_refcnt--;
-                       rt->rt_parent = NULL;
-               }
+               rtfree(rt->rt_parent);
+               rt->rt_parent = NULL;
 
                rt->rt_flags &= ~RTF_UP;
                if ((ifa = rt->rt_ifa) && ifa->ifa_rtrequest)