Update Utility class, replace deprecated each function

Changelog

@@ -1,3 +1,5 @@
+2018-02-10 DariusIII
+	* Chg: Update Utility class, replace deprecated each function
 2018-02-09 DariusIII
 	* Chg: Update laravel/framework to version 5.6.3
 	* Chg: Use categoryid to cache root category children

nntmux/utility/Utility.php

@@ -652,7 +652,8 @@ class Utility
             foreach ($xml->children($namespace) as $childXml) {
                 //recurse into child nodes
                 $childArray = self::xmlToArray($childXml, $options);
-                list($childTagName, $childProperties) = each($childArray);
+                $childTagName = key($childArray);
+                $childProperties = current($childArray);
 
                 //replace characters in tag name
                 if ($options['keySearch']) {