Fix whitespace

src/socket_base.cpp

@@ -1231,8 +1231,8 @@ void zmq::socket_base_t::event_disconnected (std::string &addr_, int fd_)
 void zmq::socket_base_t::monitor_event (zmq_event_t event_, const std::string& addr_)
 {
     if (monitor_socket) {
-    const uint16_t eid = (uint16_t)event_.event ;
-    const uint32_t value = (uint32_t)event_.value ;
+        const uint16_t eid = (uint16_t)event_.event;
+        const uint32_t value = (uint32_t)event_.value;
         // prepare and send first message frame
         // containing event id and value
         zmq_msg_t msg;