net: refactor netlink message parsing, add extack support

Change-Id: Iaa132d8cb1aece6cfc608cc1c3b4478982ac706e
diff --git a/src/net/detail/network-monitor-impl-osx.hpp b/src/net/detail/network-monitor-impl-osx.hpp
index 93cd57a..f536b5d 100644
--- a/src/net/detail/network-monitor-impl-osx.hpp
+++ b/src/net/detail/network-monitor-impl-osx.hpp
@@ -26,7 +26,7 @@
 #include "../network-monitor.hpp"
 
 #ifndef NDN_CXX_HAVE_OSX_FRAMEWORKS
-#error "This file should not be compiled ..."
+#error "This file should not be included ..."
 #endif
 
 #include "../../util/cf-releaser-osx.hpp"