make kernel build without INET6 again (pf_lb.c)

[Sebastian Benoit]

ok?

diff --git sys/net/pf_lb.c sys/net/pf_lb.c
index 588115cbff7..905af42e463 100644
--- sys/net/pf_lb.c
+++ sys/net/pf_lb.c
@@ -519,13 +519,18 @@ pf_map_addr(sa_family_t af, struct pf_rule *r, struct 
pf_addr *saddr,
                         * fall back to POOL_NONE if there is a single host
                         * address in pool.
                         */
-                       if ((af == AF_INET &&
-                           rmask->addr32[0] == INADDR_BROADCAST) ||
-                           (af == AF_INET6 &&
-                           IN6_ARE_ADDR_EQUAL(&rmask->v6, &in6mask128))) {
+                       if (af == AF_INET &&
+                           rmask->addr32[0] == INADDR_BROADCAST) {
                                pf_addrcpy(naddr, raddr, af);
                                break;
                        }
+#ifdef INET6
+                       if (af == AF_INET6 &&
+                           IN6_ARE_ADDR_EQUAL(&rmask->v6, &in6mask128)) {
+                               pf_addrcpy(naddr, raddr, af);
+                               break;
+                       }
+#endif
                } else if (pf_match_addr(0, raddr, rmask, &rpool->counter, af))
                        return (1);