rib: Fixing incorrect usage of RibRegisterCommand in RibManager::unregisterEntry

Change-Id: I3ef4a46ae6a012a4424e088369563bb590f330b1
Fixes: #1548
diff --git a/rib/rib-manager.cpp b/rib/rib-manager.cpp
index 3594a71..916ed93 100644
--- a/rib/rib-manager.cpp
+++ b/rib/rib-manager.cpp
@@ -226,7 +226,7 @@
 RibManager::unregisterEntry(const shared_ptr<const Interest>& request,
                             ControlParameters& parameters)
 {
-  ndn::nfd::RibRegisterCommand command;
+  ndn::nfd::RibUnregisterCommand command;
 
   if (!validateParameters(command, parameters))
     {