From fdbf76eee6a4e81b040d423926b71af7b491fb4a Mon Sep 17 00:00:00 2001
From: Werner Koch <wk@gnupg.org>
Date: Wed, 28 Aug 2013 17:58:43 +0200
Subject: [PATCH] Fix commit 04e2c83f.

* agent/command-ssh.c (stream_read_string): Do not assign to a NULL
ptr.
---
 agent/command-ssh.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/agent/command-ssh.c b/agent/command-ssh.c
index 0ff70b534..8f8e285ab 100644
--- a/agent/command-ssh.c
+++ b/agent/command-ssh.c
@@ -487,7 +487,8 @@ stream_read_string (estream_t stream, unsigned int secure,
   unsigned char *buffer = NULL;
   u32 length = 0;
 
-  *string_size = 0;
+  if (string_size)
+    *string_size = 0;
 
   /* Read string length.  */
   err = stream_read_uint32 (stream, &length);