Restore routable prefix discovery in Dispatcher module

Change-Id: I8ba52ca784d8ab3c1afb56fc468986904cca8d35
diff --git a/tests/unit-tests/dispatcher.t.cpp b/tests/unit-tests/dispatcher.t.cpp
index 60f0505..bb74d7b 100644
--- a/tests/unit-tests/dispatcher.t.cpp
+++ b/tests/unit-tests/dispatcher.t.cpp
@@ -77,8 +77,8 @@
 
 BOOST_AUTO_TEST_CASE(DispatcherTest)
 {
-  Dispatcher d1(user1, folder, dir1, face1, false);
-  Dispatcher d2(user2, folder, dir2, face2, false);
+  Dispatcher d1(user1, folder, dir1, face1);
+  Dispatcher d2(user2, folder, dir2, face2);
 
   advanceClocks(time::milliseconds(10), 1000);