rib: fix FibAddNextHopCommand parameters

refs #1618

Change-Id: I6f8003bee785f0eaaadbf4fa3c5c8281a2cf48da
diff --git a/rib/rib-manager.hpp b/rib/rib-manager.hpp
index 1407fb2..bcd43d7 100644
--- a/rib/rib-manager.hpp
+++ b/rib/rib-manager.hpp
@@ -74,6 +74,9 @@
            const std::string& filename);
 
   void
+  startListening(const Name& commandPrefix, const ndn::OnInterest& onRequest);
+
+  void
   onLocalhopRequest(const Interest& request);
 
   void