Fix API call parameter for enabling logs

src/_services/network.service.js

@@ -103,9 +103,7 @@ function disableLog(messages, errors) {
             .then(util.handleBasicResponse(messages, errors));
 }
 function enableLog(disableInDays, messages, errors) {
-    let ttlDaysParam = '';
-    if (typeof dispatchEvent !== 'undefined' && disableInDays !== null) ttlDaysParam = '?ttlDays=' + disableInDays;
-
+    const ttlDaysParam = disableInDays ? '?ttlDays=' + disableInDays : '';
     return fetch(`${config.apiUrl}/me/nodes/logs/start` + ttlDaysParam, util.postWithAuth())
             .then(util.handleBasicResponse(messages, errors));
 }