The format callback may not always succeed, so we need to check for

NULL. From Patrick Palka.

diff --git a/usr.bin/tmux/format.c b/usr.bin/tmux/format.c
index 2a65422..f449651 100644 (file)
--- a/usr.bin/tmux/format.c
+++ b/usr.bin/tmux/format.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: format.c,v 1.87 2015/10/25 22:29:17 nicm Exp $ */
+/* $OpenBSD: format.c,v 1.88 2015/10/27 09:18:06 nicm Exp $ */
 
 /*
  * Copyright (c) 2011 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -643,6 +643,8 @@ format_find(struct format_tree *ft, const char *key, int modifiers)
        return (NULL);
 
 found:
+       if (found == NULL)
+               return (NULL);
        copy = xstrdup(found);
        if (modifiers & FORMAT_BASENAME) {
                saved = copy;