From e57f29f8f65c83063fd8f63c88f88830fc269bd6 Mon Sep 17 00:00:00 2001
From: Marc Hoersken <info@marc-hoersken.de>
Date: Mon, 15 Dec 2014 00:18:45 +0100
Subject: [PATCH] packet.c: fix possible NULL pointer de-reference within
 listen_state

Fixes VS2012 code analysis warning C6011:
dereferencing NULL pointer 'listen_state->channel'. libssh2 packet.c 221
---
 src/packet.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/packet.c b/src/packet.c
index 74e26d7..789c803 100644
--- a/src/packet.c
+++ b/src/packet.c
@@ -218,9 +218,11 @@ packet_queue_listener(LIBSSH2_SESSION * session, unsigned char *data,
                     }
 
                     /* Link the channel into the end of the queue list */
-                    _libssh2_list_add(&listn->queue,
-                                      &listen_state->channel->node);
-                    listn->queue_size++;
+                    if (listen_state->channel) {
+                        _libssh2_list_add(&listn->queue,
+                                          &listen_state->channel->node);
+                        listn->queue_size++;
+                    }
 
                     listen_state->state = libssh2_NB_state_idle;
                     return 0;