===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/spawn.c,v
retrieving revision 1.21
retrieving revision 1.22
diff -c -r1.21 -r1.22
*** src/usr.bin/tmux/spawn.c	2020/04/13 20:51:57	1.21
--- src/usr.bin/tmux/spawn.c	2020/04/23 05:48:42	1.22
***************
*** 1,4 ****
! /* $OpenBSD: spawn.c,v 1.21 2020/04/13 20:51:57 nicm Exp $ */
  
  /*
   * Copyright (c) 2019 Nicholas Marriott <nicholas.marriott@gmail.com>
--- 1,4 ----
! /* $OpenBSD: spawn.c,v 1.22 2020/04/23 05:48:42 nicm Exp $ */
  
  /*
   * Copyright (c) 2019 Nicholas Marriott <nicholas.marriott@gmail.com>
***************
*** 366,371 ****
--- 366,372 ----
  			window_remove_pane(w, new_wp);
  		}
  		sigprocmask(SIG_SETMASK, &oldset, NULL);
+ 		environ_free(child);
  		return (NULL);
  	}
  
***************
*** 442,447 ****
--- 443,450 ----
  
  	sigprocmask(SIG_SETMASK, &oldset, NULL);
  	window_pane_set_event(new_wp);
+ 
+ 	environ_free(child);
  
  	if (sc->flags & SPAWN_RESPAWN)
  		return (new_wp);