core: Network: misc code cleanups

Change-Id: Idc37b5f834220e8e980958953785806687435f36
Refs: #3858
diff --git a/tests/core/logger.t.cpp b/tests/core/logger.t.cpp
index 07373e5..11dcfa4 100644
--- a/tests/core/logger.t.cpp
+++ b/tests/core/logger.t.cpp
@@ -27,8 +27,8 @@
 
 #include "tests/test-common.hpp"
 
-#include <boost/algorithm/string.hpp>
 #include <boost/algorithm/string/classification.hpp>
+#include <boost/algorithm/string/split.hpp>
 
 namespace nfd {
 namespace tests {