FE: cleaner getMac()

Signed-off-by: jokob-sk <jokob.sk@gmail.com>

front/deviceDetails.php

@@ -549,6 +549,7 @@ function updateDevicePageName(mac) {
 
 window.onload = function async()
 {
+  mac = getMac()
   // initializeTabs();
   updateChevrons(mac);
   updateDevicePageName(mac);

front/deviceDetailsEdit.php

@@ -288,7 +288,11 @@
   // Save device data to DB
   function setDeviceData(direction = '', refreshCallback = '') {
     // Check MAC
-    if (mac === '') {
+    mac = getMac()
+
+    if (isEmpty(mac)) {
+
+      console.error("Mac not defined");
       return;
     }