[gxml] * add override modifier to append_child in Document

[Richard Hans Schwarting <rschwart src gnome org>]

commit 3435f07e7ce825b61ee86a1a5d01400fdf294704
Author: Richard Schwarting <aquarichy gmail com>
Date:   Sun Jun 17 15:22:34 2012 -0400

    * add override modifier to append_child in Document

 gxml/Document.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gxml/Document.vala b/gxml/Document.vala
index 3255990..63af9b3 100644
--- a/gxml/Document.vala
+++ b/gxml/Document.vala
@@ -538,7 +538,7 @@ namespace GXmlDom {
 		 *
 		 * @return The newly added child.
 		 */
-		public XNode? append_child (XNode new_child) throws DomError {
+		public override XNode? append_child (XNode new_child) throws DomError {
 			if (new_child.node_type == NodeType.ELEMENT) {
 				if (xmldoc->get_root_element () == null) {
 					xmldoc->set_root_element (((Element)new_child).node);