From df1aa12ab9a16dbc0ec232c852fd6ff829c3fa37 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=A9bastien=20Deronne?= <sebastien.deronne@gmail.com>
Date: Sun, 1 Apr 2018 10:51:32 +0200
Subject: [PATCH] wifi: m_phyListener should be null before calling
 DcfManager::SetupPhyListener

---
 src/wifi/model/dcf-manager.cc | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/src/wifi/model/dcf-manager.cc b/src/wifi/model/dcf-manager.cc
index 821f091eb..8fa57a699 100644
--- a/src/wifi/model/dcf-manager.cc
+++ b/src/wifi/model/dcf-manager.cc
@@ -141,10 +141,7 @@ void
 DcfManager::SetupPhyListener (Ptr<WifiPhy> phy)
 {
   NS_LOG_FUNCTION (this << phy);
-  if (m_phyListener != 0)
-    {
-      delete m_phyListener;
-    }
+  NS_ASSERT (m_phyListener == 0);
   m_phyListener = new PhyListener (this);
   phy->RegisterListener (m_phyListener);
 }