check firt if we have events at all

src/comm_manager_poll.c

@@ -82,6 +82,7 @@ TR_commManagerPollSelect(void * _this, TR_Event event, int timeout)
 
 	nevents = poll(this->fds, cmgr->n_endpoints, timeout);
 
+	if (nevents) {
 		for (i = 0; i < cmgr->n_endpoints; i++) {
 			TR_CommEndPoint endpoint = cmgr->endpoints[i];
 
@@ -115,6 +116,7 @@ TR_commManagerPollSelect(void * _this, TR_Event event, int timeout)
 			if (nevents <= 0) break;
 		}
 	}
+}
 
 static
 void