From c33a52854141bfc279c91de4f80e7678462eb4fb Mon Sep 17 00:00:00 2001
From: Timo Bingmann <timo.bingmann@student.kit.edu>
Date: Fri, 9 Jan 2009 09:13:02 +0100
Subject: [PATCH] update prev even if it is null

---
 src/helper/yans-wifi-helper.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/helper/yans-wifi-helper.cc b/src/helper/yans-wifi-helper.cc
index 264023b69..d0c701491 100644
--- a/src/helper/yans-wifi-helper.cc
+++ b/src/helper/yans-wifi-helper.cc
@@ -131,12 +131,12 @@ YansWifiChannelHelper::Create (void) const
       if (prev != 0)
 	{
 	  prev->SetNext (cur);
-	  prev = cur;
 	}
       if (m_propagationLoss.begin () == i)
 	{
 	  channel->SetPropagationLossModel (cur);
 	}
+      prev = cur;
     }
   Ptr<PropagationDelayModel> delay = m_propagationDelay.Create<PropagationDelayModel> ();
   channel->SetPropagationDelayModel (delay);