Removing unnecessary debug information. Adding missing virtual
destructors to base classes
diff --git a/model/ccnx.cc b/model/ccnx.cc
index 0fe4b31..af551a6 100644
--- a/model/ccnx.cc
+++ b/model/ccnx.cc
@@ -38,4 +38,8 @@
   return tid;
 }
 
+Ccnx::~Ccnx ()
+{
+}
+
 } // namespace ns3