added missing getter on GetAttr node class

git-svn-id: http://svn.twig-project.org/trunk@199 93ef8e89-cb99-4229-a87c-7fa0fa45744b

lib/Twig/Node/Expression/GetAttr.php

@@ -29,6 +29,11 @@ class Twig_Node_Expression_GetAttr extends Twig_Node_Expression implements Twig_
     return get_class($this).'('.$this->node.', '.$this->attr.')';
   }
 
+  public function getNode()
+  {
+    return $this->node;
+  }
+
   public function getNodes()
   {
     return array($this->node);