all: avoid usage of deprecated namespace ndn::Tlv

refs #2079

Change-Id: I32b7f10bcde1e70617950900d54f6ce0fb588ce9
diff --git a/src/handles/tcp-bulk-insert-handle.cpp b/src/handles/tcp-bulk-insert-handle.cpp
index d7802ed..6c06b23 100644
--- a/src/handles/tcp-bulk-insert-handle.cpp
+++ b/src/handles/tcp-bulk-insert-handle.cpp
@@ -171,7 +171,7 @@
       offset += element.size();
       BOOST_ASSERT(offset <= m_inputBufferSize);
 
-      if (element.type() == ndn::Tlv::Data)
+      if (element.type() == ndn::tlv::Data)
         {
           try {
             Data data(element);