From de727ab260115d1813b0a039fc74fca488d0c31d Mon Sep 17 00:00:00 2001
From: "henrike@webrtc.org"
 <henrike@webrtc.org@4adac7df-926f-26a2-2b94-8c16560cd09d>
Date: Sun, 18 Nov 2012 18:49:13 +0000
Subject: [PATCH] Fixes http://code.google.com/p/webrtc/issues/detail?id=941

BUG=941

Review URL: https://webrtc-codereview.appspot.com/966020

git-svn-id: http://webrtc.googlecode.com/svn/trunk@3125 4adac7df-926f-26a2-2b94-8c16560cd09d
---
 webrtc/voice_engine/channel.cc | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/webrtc/voice_engine/channel.cc b/webrtc/voice_engine/channel.cc
index 976146f552..015518c28a 100644
--- a/webrtc/voice_engine/channel.cc
+++ b/webrtc/voice_engine/channel.cc
@@ -332,7 +332,10 @@ Channel::SendRTCPPacket(int channel, const void *data, int len)
     // Packet transmission using external transport transport
     {
         CriticalSectionScoped cs(&_callbackCritSect);
-
+        if (_transportPtr == NULL)
+        {
+            return -1;
+        }
         int n = _transportPtr->SendRTCPPacket(channel,
                                               bufferToSendPtr,
                                               bufferLength);