Fix recurring sync prefix registration on every hello data

refs: #5157

Change-Id: Id0f77789976bd84720d2f96b549013b285e58978
diff --git a/src/nlsr.hpp b/src/nlsr.hpp
index 3e22874..4c97401 100644
--- a/src/nlsr.hpp
+++ b/src/nlsr.hpp
@@ -179,7 +179,7 @@
 private:
   ndn::util::signal::ScopedConnection m_onNewLsaConnection;
   ndn::util::signal::ScopedConnection m_onPrefixRegistrationSuccess;
-  ndn::util::signal::ScopedConnection m_onHelloDataValidated;
+  ndn::util::signal::ScopedConnection m_onInitialHelloDataValidated;
 
 PUBLIC_WITH_TESTS_ELSE_PRIVATE:
   ndn::mgmt::Dispatcher m_dispatcher;