Make sure we don't spuriously reconsider a timed-out route.

route.c

@@ -253,11 +253,10 @@ update_route_metric(struct route *route)
 
     oldmetric = route->metric;
     if(route->time < now.tv_sec - route_timeout_delay) {
-        if(oldmetric < INFINITY) {
-            route->refmetric = INFINITY;
-            route->seqno = (route->dest->seqno + 1) & 0xFF;
-        }
         newmetric = INFINITY;
+        route->refmetric = INFINITY;
+        if(oldmetric < INFINITY)
+            route->seqno = (route->dest->seqno + 1) & 0xFF;
     } else {
         newmetric = MIN(route->refmetric + neighbour_cost(route->nexthop),
                         INFINITY);