From dcb5303b4b00b32f484e8f62f229a7ce4b890d18 Mon Sep 17 00:00:00 2001
From: Moritz Grimm <mgrimm@mrsserver.net>
Date: Thu, 21 May 2015 01:24:09 +0200
Subject: [PATCH] Consistently set errstrp

---
 src/cfg_encoder.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/cfg_encoder.c b/src/cfg_encoder.c
index c322bb1..8f7b246 100644
--- a/src/cfg_encoder.c
+++ b/src/cfg_encoder.c
@@ -110,7 +110,7 @@ cfg_encoder_set_format_str(struct cfg_encoder *e, const char *fmt_str,
 {
 	enum cfg_stream_format	fmt;
 
-	if (!fmt_str) {
+	if (!fmt_str || !fmt_str[0]) {
 		if (errstrp)
 			*errstrp = "empty";
 		return (-1);