From 11c5d86d40711f738859a6a4b0973503b963a414 Mon Sep 17 00:00:00 2001
From: jsteube <jens.steube@gmail.com>
Date: Sun, 20 Nov 2016 22:15:39 +0100
Subject: [PATCH] Fix out_flush() in case of zero length message

---
 src/stdout.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/stdout.c b/src/stdout.c
index bce6a24e6..78471f55d 100644
--- a/src/stdout.c
+++ b/src/stdout.c
@@ -14,6 +14,8 @@
 
 static void out_flush (out_t *out)
 {
+  if (out->len == 0) return;
+
   fwrite (out->buf, 1, out->len, out->fp);
 
   out->len = 0;