Recheck expired down lifetime when the last NCD owner releases it

src/transport_layer/node_conn_direct.c

@@ -1155,7 +1155,9 @@ static void ncd_handle_close(struct NODE_CONN_DIRECT* h, int force) {
     if (!conn->links_up) {
         DEBUG_INFO(DEBUG_CATEGORY_NCD, "[ncd] last handle released while DOWN, retaining until ETCP timeout node=%016llx",
                    (unsigned long long)entry->node_id);
-        ncd_finish(entry, 0); return;
+        ncd_finish(entry, 0);
+        if (etcp_conn_schedule_down_close(conn) < 0) etcp_connection_close(conn);
+        return;
     }
     if (entry->connect_timer) { uasync_cancel_timeout(entry->ua, entry->connect_timer); entry->connect_timer = NULL; }
     conn->fin_wait = 1; conn->fin_wait_clear_cb = ncd_fin_wait_cancelled; conn->fin_wait_clear_arg = entry;