fix codestyle - empty line (#4112)

Author: Flyingmana

app/code/core/Mage/Core/Model/Security/HtmlEscapedString.php

@@ -1,12 +1,12 @@
 <?php
+
 declare(strict_types=1);
 
 /**
  *
  */
 class Mage_Core_Model_Security_HtmlEscapedString implements Stringable
 {
-
     protected $originalValue;
     protected $allowedTags;