From 7140cce7f31eb2135491fdc62645b4753d941520 Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Wed, 20 May 2015 06:39:02 +0000
Subject: [PATCH] Return empty string if format is empty rather than attempting
 to allocate zero bytes.

---
 format.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/format.c b/format.c
index db6f9231..eff1668d 100644
--- a/format.c
+++ b/format.c
@@ -335,7 +335,7 @@ format_expand_time(struct format_tree *ft, const char *fmt, time_t t)
 	size_t		 tmplen;
 	struct tm	*tm;
 
-	if (fmt == NULL)
+	if (fmt == NULL || *fmt == '\0')
 		return (xstrdup(""));
 
 	tm = localtime(&t);