BUG/MEDIUM: listeners: Don't call fd_stop_recv() if fd_updt is NULL.

In do_unbind_listener, don't bother calling fd_stop_recv() if fd_updt is
NULL. It means it has already been free'd, and it would crash.

diff --git a/src/listener.c b/src/listener.c
index 037668f..8897c78 100644 (file)
--- a/src/listener.c
+++ b/src/listener.c
@@ -449,7 +449,7 @@ void dequeue_all_listeners(struct list *list)
  */
 void do_unbind_listener(struct listener *listener, int do_close)
 {
-       if (listener->state == LI_READY)
+       if (listener->state == LI_READY && fd_updt)
                fd_stop_recv(listener->fd);
 
        LIST_DEL_LOCKED(&listener->wait_queue);