mshtml: Don't share nstextarea reference with nsnode.

dlls/mshtml/htmltextarea.c

@@ -411,6 +411,26 @@ static HRESULT HTMLTextAreaElementImpl_get_disabled(HTMLDOMNode *iface, VARIANT_
     return IHTMLTextAreaElement_get_disabled(&This->IHTMLTextAreaElement_iface, p);
 }
 
+static void HTMLTextAreaElement_traverse(HTMLDOMNode *iface, nsCycleCollectionTraversalCallback *cb)
+{
+    HTMLTextAreaElement *This = impl_from_HTMLDOMNode(iface);
+
+    if(This->nstextarea)
+        note_cc_edge((nsISupports*)This->nstextarea, "This->nstextarea", cb);
+}
+
+static void HTMLTextAreaElement_unlink(HTMLDOMNode *iface)
+{
+    HTMLTextAreaElement *This = impl_from_HTMLDOMNode(iface);
+
+    if(This->nstextarea) {
+        nsIDOMHTMLTextAreaElement *nstextarea = This->nstextarea;
+
+        This->nstextarea = NULL;
+        nsIDOMHTMLTextAreaElement_Release(nstextarea);
+    }
+}
+
 static const NodeImplVtbl HTMLTextAreaElementImplVtbl = {
     HTMLTextAreaElement_QI,
     HTMLElement_destructor,
@@ -421,7 +441,14 @@ static const NodeImplVtbl HTMLTextAreaElementImplVtbl = {
     NULL,
     NULL,
     HTMLTextAreaElementImpl_put_disabled,
-    HTMLTextAreaElementImpl_get_disabled
+    HTMLTextAreaElementImpl_get_disabled,
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+    HTMLTextAreaElement_traverse,
+    HTMLTextAreaElement_unlink
 };
 
 static const tid_t HTMLTextAreaElement_iface_tids[] = {
@@ -451,12 +478,8 @@ HRESULT HTMLTextAreaElement_Create(HTMLDocumentNode *doc, nsIDOMHTMLElement *nse
 
     HTMLElement_Init(&ret->element, doc, nselem, &HTMLTextAreaElement_dispex);
 
-    nsres = nsIDOMHTMLElement_QueryInterface(nselem, &IID_nsIDOMHTMLTextAreaElement,
-                                             (void**)&ret->nstextarea);
-
-    /* Share nstextarea reference with nsnode */
-    assert(nsres == NS_OK && (nsIDOMNode*)ret->nstextarea == ret->element.node.nsnode);
-    nsIDOMNode_Release(ret->element.node.nsnode);
+    nsres = nsIDOMHTMLElement_QueryInterface(nselem, &IID_nsIDOMHTMLTextAreaElement, (void**)&ret->nstextarea);
+    assert(nsres == NS_OK);
 
     *elem = &ret->element;
     return S_OK;