ndnboost: Also rename BOOST_ to NDNBOOST_
diff --git a/include/ndnboost/mpl/size_t.hpp b/include/ndnboost/mpl/size_t.hpp
index 182f128..fc86699 100644
--- a/include/ndnboost/mpl/size_t.hpp
+++ b/include/ndnboost/mpl/size_t.hpp
@@ -1,6 +1,6 @@
 
-#ifndef BOOST_MPL_SIZE_T_HPP_INCLUDED
-#define BOOST_MPL_SIZE_T_HPP_INCLUDED
+#ifndef NDNBOOST_MPL_SIZE_T_HPP_INCLUDED
+#define NDNBOOST_MPL_SIZE_T_HPP_INCLUDED
 
 // Copyright Aleksey Gurtovoy 2000-2004
 //
@@ -22,4 +22,4 @@
 
 #include <ndnboost/mpl/aux_/integral_wrapper.hpp>
 
-#endif // BOOST_MPL_SIZE_T_HPP_INCLUDED
+#endif // NDNBOOST_MPL_SIZE_T_HPP_INCLUDED