Check event_initialized before event_del if event may not have been set

up; libevent2 complains about this. Reported by Moriyoshi Koizumi.

names.c

@@ -36,6 +36,7 @@ queue_window_name(struct window *w)
 	tv.tv_sec = 0;
 	tv.tv_usec = NAME_INTERVAL * 1000L;
 
+	if (event_initialized(&w->name_timer))
 		evtimer_del(&w->name_timer);
 	evtimer_set(&w->name_timer, window_name_callback, w);
 	evtimer_add(&w->name_timer, &tv);

server-client.c

@@ -153,10 +153,12 @@ server_client_lost(struct client *c)
 
 	evtimer_del(&c->repeat_timer);
 
+	if (event_initialized(&c->identify_timer))
 		evtimer_del(&c->identify_timer);
 
 	if (c->message_string != NULL)
 		xfree(c->message_string);
+	if (event_initialized (&c->message_timer))
 		evtimer_del(&c->message_timer);
 	for (i = 0; i < ARRAY_LENGTH(&c->message_log); i++) {
 		msg = &ARRAY_ITEM(&c->message_log, i);
@@ -176,6 +178,7 @@ server_client_lost(struct client *c)
 
 	close(c->ibuf.fd);
 	imsg_clear(&c->ibuf);
+	if (event_initialized(&c->event))
 		event_del(&c->event);
 
 	for (i = 0; i < ARRAY_LENGTH(&dead_clients); i++) {

server-fn.c

@@ -453,6 +453,7 @@ server_set_identify(struct client *c)
 	tv.tv_sec = delay / 1000;
 	tv.tv_usec = (delay % 1000) * 1000L;
 
+	if (event_initialized (&c->identify_timer))
 		evtimer_del(&c->identify_timer);
 	evtimer_set(&c->identify_timer, server_callback_identify, c);
 	evtimer_add(&c->identify_timer, &tv);
@@ -491,6 +492,7 @@ server_update_event(struct client *c)
 		events |= EV_READ;
 	if (c->ibuf.w.queued > 0)
 		events |= EV_WRITE;
+	if (event_initialized(&c->event))
 		event_del(&c->event);
 	event_set(&c->event, c->ibuf.fd, events, server_client_callback, c);
 	event_add(&c->event, NULL);

status.c

@@ -776,6 +776,7 @@ status_message_set(struct client *c, const char *fmt, ...)
 	tv.tv_sec = delay / 1000;
 	tv.tv_usec = (delay % 1000) * 1000L;
 
+	if (event_initialized (&c->message_timer))
 		evtimer_del(&c->message_timer);
 	evtimer_set(&c->message_timer, status_message_callback, c);
 	evtimer_add(&c->message_timer, &tv);

tty-keys.c

@@ -549,6 +549,7 @@ start_timer:
 	tv.tv_sec = delay / 1000;
 	tv.tv_usec = (delay % 1000) * 1000L;
 
+	if (event_initialized(&tty->key_timer))
 		evtimer_del(&tty->key_timer);
 	evtimer_set(&tty->key_timer, tty_keys_callback, tty);
 	evtimer_add(&tty->key_timer, &tv);
@@ -573,6 +574,7 @@ found_key:
 	goto handle_key;
 
 handle_key:
+	if (event_initialized(&tty->key_timer))
 		evtimer_del(&tty->key_timer);
 
 	if (key != KEYC_NONE)

tty.c

@@ -279,6 +279,7 @@ tty_close(struct tty *tty)
 		tty->log_fd = -1;
 	}
 
+	if (event_initialized(&tty->key_timer))
 		evtimer_del(&tty->key_timer);
 	tty_stop_tty(tty);
 

window.c

@@ -350,6 +350,7 @@ window_destroy(struct window *w)
 	if (w->layout_root != NULL)
 		layout_free(w);
 
+	if (event_initialized(&w->name_timer))
 		evtimer_del(&w->name_timer);
 
 	options_free(&w->options);