Bail if we get unknown address families

git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@2026 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishd/cache_vrt.c

@@ -469,6 +469,8 @@ VRT_IP_string(struct sess *sp, struct sockaddr *sa)
 	case AF_INET6:
 		len = sizeof(struct sockaddr_in6);
 		break;
+	default:
+		INCOMPL();
 	}
 	XXXAN(len);
 	TCP_name(sa, len, h, sizeof h, p, sizeof p);