From e51b2e31e510f088056e1da46616ed5847542446 Mon Sep 17 00:00:00 2001
From: Matthias Wachs <wachs@net.in.tum.de>
Date: Fri, 6 Jul 2012 12:34:26 +0000
Subject: [PATCH] - can happen on disconnect

---
 src/transport/gnunet-transport.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/transport/gnunet-transport.c b/src/transport/gnunet-transport.c
index b70c9c4b0..568cf56fa 100644
--- a/src/transport/gnunet-transport.c
+++ b/src/transport/gnunet-transport.c
@@ -355,6 +355,9 @@ transmit_data (void *cls, size_t size, void *buf)
 {
   struct GNUNET_MessageHeader *m = buf;
 
+  if ((NULL == buf) && (0 == size))
+    return 0;
+
   GNUNET_assert (size >= sizeof (struct GNUNET_MessageHeader));
   GNUNET_assert (size < GNUNET_SERVER_MAX_MESSAGE_SIZE);
   m->size = ntohs (size);
-- 
2.25.1