minimal optimization by using node_id::is_all_zero

src/kademlia/node.cpp

@@ -85,7 +85,7 @@ node_id calculate_node_id(node_id const& nid, aux::listen_socket_handle const& s
 		return generate_random_id();
 	}
 
-	if (nid == node_id::min() || !verify_id(nid, external_address))
+	if (nid.is_all_zeros() || !verify_id(nid, external_address))
 		return generate_id(external_address);
 
 	return nid;

src/kademlia/put_data.cpp

@@ -39,7 +39,7 @@ POSSIBILITY OF SUCH DAMAGE.
 namespace libtorrent { namespace dht {
 
 put_data::put_data(node& dht_node, put_callback const& callback)
-	: traversal_algorithm(dht_node, (node_id::min)())
+	: traversal_algorithm(dht_node, {})
 	, m_put_callback(callback)
 {}