rib: Perform FIB updates before modifying RIB

refs: #1941

Change-Id: I1457f71ddd1c120daae48308d5cc02a7c0ecf93d
diff --git a/rib/fib-update.cpp b/rib/fib-update.cpp
index cda4f14..25e2a62 100644
--- a/rib/fib-update.cpp
+++ b/rib/fib-update.cpp
@@ -1,12 +1,12 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2014,  Regents of the University of California,
- *                      Arizona Board of Regents,
- *                      Colorado State University,
- *                      University Pierre & Marie Curie, Sorbonne University,
- *                      Washington University in St. Louis,
- *                      Beijing Institute of Technology,
- *                      The University of Memphis
+ * Copyright (c) 2014-2015,  Regents of the University of California,
+ *                           Arizona Board of Regents,
+ *                           Colorado State University,
+ *                           University Pierre & Marie Curie, Sorbonne University,
+ *                           Washington University in St. Louis,
+ *                           Beijing Institute of Technology,
+ *                           The University of Memphis.
  *
  * This file is part of NFD (Named Data Networking Forwarding Daemon).
  * See AUTHORS.md for complete list of NFD authors and contributors.
@@ -28,27 +28,27 @@
 namespace nfd {
 namespace rib {
 
-shared_ptr<FibUpdate>
+FibUpdate
 FibUpdate::createAddUpdate(const Name& name, const uint64_t faceId, const uint64_t cost)
 {
-  shared_ptr<FibUpdate> update = make_shared<FibUpdate>();
+  FibUpdate update;
 
-  update->name = name;
-  update->faceId = faceId;
-  update->cost = cost;
-  update->action = ADD_NEXTHOP;
+  update.name = name;
+  update.faceId = faceId;
+  update.cost = cost;
+  update.action = ADD_NEXTHOP;
 
   return update;
 }
 
-shared_ptr<FibUpdate>
+FibUpdate
 FibUpdate::createRemoveUpdate(const Name& name, const uint64_t faceId)
 {
-  shared_ptr<FibUpdate> update = make_shared<FibUpdate>();
+  FibUpdate update;
 
-  update->name = name;
-  update->faceId = faceId;
-  update->action = REMOVE_NEXTHOP;
+  update.name = name;
+  update.faceId = faceId;
+  update.action = REMOVE_NEXTHOP;
 
   return update;
 }