From 347649e855da809b1cca92528045349d4f8647bb Mon Sep 17 00:00:00 2001
From: Maciej Suminski <maciej.suminski@cern.ch>
Date: Tue, 4 Feb 2014 13:40:39 +0100
Subject: [PATCH] Protection against non consecutive net codes.

---
 pcbnew/router/pns_router.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pcbnew/router/pns_router.cpp b/pcbnew/router/pns_router.cpp
index 1babefa598..b655ac363f 100644
--- a/pcbnew/router/pns_router.cpp
+++ b/pcbnew/router/pns_router.cpp
@@ -66,6 +66,9 @@ public:
         for( unsigned int i = 0; i < aBoard->GetNetCount(); i++ )
         {
             NETINFO_ITEM* ni = aBoard->FindNet( i );
+            if( ni == NULL )
+                continue;
+
             wxString netClassName = ni->GetClassName();
             NETCLASS* nc = aBoard->m_NetClasses.Find( netClassName );
             int clearance = nc->GetClearance();