spaces deleted

src/session_base.cpp

@@ -357,6 +357,7 @@ void zmq::session_base_t::proceed_with_term ()
 
 void zmq::session_base_t::timer_event (int id_)
 {
+
     //  Linger period expired. We can proceed with termination even though
     //  there are still pending messages to be sent.
     zmq_assert (id_ == linger_timer_id);