common.hpp: prepend NDN_CXX_ to WITH_TESTS macros

refs #2060

Change-Id: I74ea076cacf01d2f7dd9c2e5a42dec1d336f489f
diff --git a/src/util/in-memory-storage-persistent.hpp b/src/util/in-memory-storage-persistent.hpp
index 85cd2e8..cd9faa3 100644
--- a/src/util/in-memory-storage-persistent.hpp
+++ b/src/util/in-memory-storage-persistent.hpp
@@ -39,7 +39,7 @@
   virtual
   ~InMemoryStoragePersistent();
 
-PUBLIC_WITH_TESTS_ELSE_PROTECTED:
+NDN_CXX_PUBLIC_WITH_TESTS_ELSE_PROTECTED:
   /** @brief Do nothing.
    *
    *  This storage is persistent, and does not support eviction.