[gxml: 15/18] DomNode.vala, NodeList.vala: make references to Document weak to break ref cycles preventing finalis

[Richard Hans Schwarting <rschwart src gnome org>]

commit 579e73130da4cb7e0c6b53fd31318eb2d1ad20d8
Author: Richard Schwarting <aquarichy gmail com>
Date:   Sun Jun 9 23:34:43 2013 -0400

    DomNode.vala, NodeList.vala: make references to Document weak to break ref cycles preventing finalisation

 gxml/DomNode.vala  |    2 +-
 gxml/NodeList.vala |    4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/gxml/DomNode.vala b/gxml/DomNode.vala
index fe0d16c..1c8ce36 100644
--- a/gxml/DomNode.vala
+++ b/gxml/DomNode.vala
@@ -134,7 +134,7 @@ namespace GXml {
                /**
                 * A link to the Document to which this node belongs.
                 */
-               public Document owner_document {
+               public weak Document owner_document {
                        get;
                        internal set;
                }
diff --git a/gxml/NodeList.vala b/gxml/NodeList.vala
index 9b93467..02d1bdb 100644
--- a/gxml/NodeList.vala
+++ b/gxml/NodeList.vala
@@ -413,7 +413,7 @@ namespace GXml {
                   same with nodes from GetElementByTagName, made need separate impls for each */
                // TODO: if necessary, create two versions that use parent instead of head
 
-               internal Document owner;
+               internal weak Document owner;
                internal abstract Xml.Node *head { get; set; }
 
                internal abstract Xml.Node *parent_as_xmlnode { get; }
@@ -606,7 +606,7 @@ namespace GXml {
                /* ** NodeListIterator ***/
 
                private class NodeListIterator : GenericNodeListIterator {
-                       private Document doc;
+                       private weak Document doc;
                        private Xml.Node *cur;
                        private Xml.Node *head;
                        private Xml.Node *next_node;