From a6e289c8ef3beb03abe3140b8617362be8759750 Mon Sep 17 00:00:00 2001
From: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
Date: Wed, 19 Dec 2007 13:22:55 +0100
Subject: [PATCH] ensure m_listener is initialized properly

---
 src/devices/wifi/mac-low.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/devices/wifi/mac-low.cc b/src/devices/wifi/mac-low.cc
index 50c1d5d61..cd21e7f5d 100644
--- a/src/devices/wifi/mac-low.cc
+++ b/src/devices/wifi/mac-low.cc
@@ -230,7 +230,8 @@ MacLow::MacLow ()
     m_sendAckEvent (),
     m_sendDataEvent (),
     m_waitSifsEvent (),
-    m_currentPacket (0)
+    m_currentPacket (0),
+    m_listener (0)
 {
   m_lastNavDuration = Seconds (0);
   m_lastNavStart = Seconds (0);
@@ -294,6 +295,7 @@ MacLow::CancelAllEvents (void)
   if (oneRunning && m_listener != 0) 
     {
       m_listener->Cancel ();
+      m_listener = 0;
     }
 }