Be more careful during final cleanup process (all ccnx objects are now properly destroyed)
diff --git a/model/ccnx-l3-protocol.cc b/model/ccnx-l3-protocol.cc
index 823ddbe..63c9049 100644
--- a/model/ccnx-l3-protocol.cc
+++ b/model/ccnx-l3-protocol.cc
@@ -133,10 +133,12 @@
   m_node = 0;
 
   // Force delete on objects
+  m_forwardingStrategy = 0; // there is a reference to PIT stored in here
   m_rit = 0;
   m_pit = 0;
   m_contentStore = 0;
-  
+  m_fib = 0;
+
   // m_forwardingStrategy = 0;
   Object::DoDispose ();
 }