Do not try to strdup NULL, from seL4 at disroot dot org in GitHub issue

3038.

diff --git a/usr.bin/tmux/popup.c b/usr.bin/tmux/popup.c
index f1e6cba..07f57ab 100644 (file)
--- a/usr.bin/tmux/popup.c
+++ b/usr.bin/tmux/popup.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: popup.c,v 1.42 2021/10/25 09:38:36 nicm Exp $ */
+/* $OpenBSD: popup.c,v 1.43 2022/01/17 10:40:03 nicm Exp $ */
 
 /*
  * Copyright (c) 2020 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -668,7 +668,8 @@ popup_display(int flags, enum box_lines lines, struct cmdq_item *item, u_int px,
        pd = xcalloc(1, sizeof *pd);
        pd->item = item;
        pd->flags = flags;
-       pd->title = xstrdup(title);
+       if (title != NULL)
+               pd->title = xstrdup(title);
 
        pd->c = c;
        pd->c->references++;