Index: branches/5.2.x/core/kernel/session/session.php
===================================================================
diff -u -N -r16513 -r16586
--- branches/5.2.x/core/kernel/session/session.php	(.../session.php)	(revision 16513)
+++ branches/5.2.x/core/kernel/session/session.php	(.../session.php)	(revision 16586)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: session.php 16513 2017-01-20 14:10:53Z alex $
+* @version	$Id: session.php 16586 2017-07-18 11:41:47Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -702,7 +702,7 @@
 
 	function NeedQueryString($use_cache = 1)
 	{
-		if ($this->CachedNeedQueryString != null && $use_cache) {
+		if ( $this->CachedNeedQueryString !== null && $use_cache ) {
 			return $this->CachedNeedQueryString;
 		}
 
@@ -1127,4 +1127,4 @@
 		return $ret;
 	}
 
-}
\ No newline at end of file
+}