Do not try to use NULL time values.

diff --git a/usr.bin/tmux/format.c b/usr.bin/tmux/format.c
index 59d047a..74ed8b0 100644 (file)
--- a/usr.bin/tmux/format.c
+++ b/usr.bin/tmux/format.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: format.c,v 1.294 2021/08/20 20:08:30 nicm Exp $ */
+/* $OpenBSD: format.c,v 1.295 2021/10/05 12:45:02 nicm Exp $ */
 
 /*
  * Copyright (c) 2011 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -3327,7 +3327,7 @@ format_find(struct format_tree *ft, const char *key, int modifiers,
        fte = format_table_get(key);
        if (fte != NULL) {
                value = fte->cb(ft);
-               if (fte->type == FORMAT_TABLE_TIME)
+               if (fte->type == FORMAT_TABLE_TIME && value != NULL)
                        t = ((struct timeval *)value)->tv_sec;
                else
                        found = value;