Index: sysext/cms/tslib/class.tslib_content.php
===================================================================
--- sysext/cms/tslib/class.tslib_content.php	(revision 6666)
+++ sysext/cms/tslib/class.tslib_content.php	(working copy)
@@ -3489,13 +3489,9 @@
 	 * @return	string		The output content stream
 	 * @see substituteSubpart(), substituteMarker(), substituteMarkerInObject(), TEMPLATE()
 	 */
-	public function substituteMarkerArrayCached($content, array $markContentArray = NULL, array $subpartContentArray = NULL, array $wrappedSubpartContentArray = NULL) {
+	public function substituteMarkerArrayCached($content, array $markContentArray = array(), array $subpartContentArray = array(), array $wrappedSubpartContentArray = array()) {
 		$GLOBALS['TT']->push('substituteMarkerArrayCached');
 
-			// If not arrays then set them
-		if (is_null($markContentArray))	$markContentArray=array();	// Plain markers
-		if (is_null($subpartContentArray))	$subpartContentArray=array();	// Subparts being directly substituted
-		if (is_null($wrappedSubpartContentArray))	$wrappedSubpartContentArray=array();	// Subparts being wrapped
 			// Finding keys and check hash:
 		$sPkeys = array_keys($subpartContentArray);
 		$wPkeys = array_keys($wrappedSubpartContentArray);