match new prototype for switch_ivr_park

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@4303 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/mod/event_handlers/mod_event_socket/mod_event_socket.c

@@ -234,7 +234,7 @@ static void socket_function(switch_core_session_t *session, char *data)
     
     if (switch_test_flag(listener, LFLAG_ASYNC)) {
         launch_listener_thread(listener);
-        switch_ivr_park(session);
+        switch_ivr_park(session, NULL);
     } else {
         listener_run(NULL, (void*) listener);
     }