zmqeventconsumer.cpp: fix sign-compare warning

Author: bourtemb

cppapi/client/eventconsumer.h

@@ -638,7 +638,7 @@ private :
 	void print_error_message(const char *mess) {ApiUtil *au=ApiUtil::instance();au->print_error_message(mess);}
 	void set_ctrl_sock_bound() {sock_bound_mutex.lock();ctrl_socket_bound=true;sock_bound_mutex.unlock();}
 	bool is_ctrl_sock_bound() {bool _b;sock_bound_mutex.lock();_b=ctrl_socket_bound;sock_bound_mutex.unlock();return _b;}
-	void set_socket_hwm(size_t hwm);
+	void set_socket_hwm(int hwm);
 
     bool check_zmq_endpoint(const string &);
 

cppapi/client/zmqeventconsumer.cpp

@@ -886,7 +886,7 @@ bool ZmqEventConsumer::process_ctrl(zmq::message_t &received_ctrl,zmq::pollitem_
 
             if (connect_pub == true)
             {
-                set_socket_hwm(sub_hwm);
+                set_socket_hwm((int) sub_hwm);
 
                 event_sub_sock->connect(endpoint);
                 if (force_connect == 0)
@@ -3502,7 +3502,7 @@ void ZmqEventConsumer::get_subscribed_event_ids(DeviceProxy *_dev,vector<int> &_
  *
  * @param hwm: new ZMQ receive buffer high water mark
  */
-void ZmqEventConsumer::set_socket_hwm(size_t hwm)
+void ZmqEventConsumer::set_socket_hwm(int hwm)
 {
     int current_sub_hwm = SUB_HWM;
     size_t curr_sub_hw_size = sizeof(current_sub_hwm);