===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/control.c,v
retrieving revision 1.45
retrieving revision 1.46
diff -c -r1.45 -r1.46
*** src/usr.bin/tmux/control.c	2020/09/18 11:20:59	1.45
--- src/usr.bin/tmux/control.c	2021/08/17 20:17:21	1.46
***************
*** 1,4 ****
! /* $OpenBSD: control.c,v 1.45 2020/09/18 11:20:59 nicm Exp $ */
  
  /*
   * Copyright (c) 2012 Nicholas Marriott <nicholas.marriott@gmail.com>
--- 1,4 ----
! /* $OpenBSD: control.c,v 1.46 2021/08/17 20:17:21 nicm Exp $ */
  
  /*
   * Copyright (c) 2012 Nicholas Marriott <nicholas.marriott@gmail.com>
***************
*** 665,671 ****
  	uint64_t		 age, t = get_timer();
  
  	wp = control_window_pane(c, cp->pane);
! 	if (wp == NULL) {
  		TAILQ_FOREACH_SAFE(cb, &cp->blocks, entry, cb1) {
  			TAILQ_REMOVE(&cp->blocks, cb, entry);
  			control_free_block(cs, cb);
--- 665,671 ----
  	uint64_t		 age, t = get_timer();
  
  	wp = control_window_pane(c, cp->pane);
! 	if (wp == NULL || wp->fd == -1) {
  		TAILQ_FOREACH_SAFE(cb, &cp->blocks, entry, cb1) {
  			TAILQ_REMOVE(&cp->blocks, cb, entry);
  			control_free_block(cs, cb);
***************
*** 865,871 ****
  	struct control_sub_pane	*csp, find;
  
  	wp = window_pane_find_by_id(csub->id);
! 	if (wp == NULL)
  		return;
  	w = wp->window;
  
--- 865,871 ----
  	struct control_sub_pane	*csp, find;
  
  	wp = window_pane_find_by_id(csub->id);
! 	if (wp == NULL || wp->fd == -1)
  		return;
  	w = wp->window;