[ZF-11989] Added missing require_once calls to Zend_Pdf_Canvas_Abstract

git-svn-id: http://framework.zend.com/svn/framework/standard/trunk@24629 44c647ce-9c0f-0410-b52a-842ac1e357ba

library/Zend/Pdf/Canvas/Abstract.php

@@ -31,6 +31,9 @@ require_once 'Zend/Pdf/Element/Name.php';
 require_once 'Zend/Pdf/Element/Null.php';
 require_once 'Zend/Pdf/Element/Numeric.php';
 require_once 'Zend/Pdf/Element/String.php';
+require_once 'Zend/Pdf/Resource/GraphicsState.php';
+require_once 'Zend/Pdf/Resource/Font.php';
+require_once 'Zend/Pdf/Resource/Image.php';
 
 
 /**