pkg constructor php7

pkg/vtiger/modules/PBXManager/modules/PBXManager/PBXManager.php

@@ -74,10 +74,13 @@ class PBXManager extends CRMEntity {
     var $default_order_by = 'customernumber';
     var $default_sort_order = 'ASC';
     
-    function PBXManager(){
+    function __construct() {
         $this->db = PearDatabase::getInstance();
         $this->column_fields = getColumnFields('PBXManager');
     }
+    function PBXManager(){
+        self::__construct();
+    }
     
      /**
      * Invoked when special actions are performed on the module.