msxml3: Always return False for nodes that can't have children.

dlls/msxml3/cdata.c

@@ -333,7 +333,7 @@ static HRESULT WINAPI domcdata_hasChildNodes(
 {
     domcdata *This = impl_from_IXMLDOMCDATASection( iface );
     TRACE("(%p)->(%p)\n", This, ret);
-    return node_has_childnodes(&This->node, ret);
+    return return_var_false(ret);
 }
 
 static HRESULT WINAPI domcdata_get_ownerDocument(

dlls/msxml3/comment.c

@@ -332,7 +332,7 @@ static HRESULT WINAPI domcomment_hasChildNodes(
 {
     domcomment *This = impl_from_IXMLDOMComment( iface );
     TRACE("(%p)->(%p)\n", This, ret);
-    return node_has_childnodes(&This->node, ret);
+    return return_var_false(ret);
 }
 
 static HRESULT WINAPI domcomment_get_ownerDocument(

dlls/msxml3/msxml_private.h

@@ -475,6 +475,15 @@ static inline HRESULT return_null_bstr(BSTR *p)
     return S_FALSE;
 }
 
+static inline HRESULT return_var_false(VARIANT_BOOL *p)
+{
+    if(!p)
+        return E_INVALIDARG;
+
+    *p = VARIANT_FALSE;
+    return S_FALSE;
+}
+
 extern IXMLDOMParseError *create_parseError( LONG code, BSTR url, BSTR reason, BSTR srcText,
                                              LONG line, LONG linepos, LONG filepos ) DECLSPEC_HIDDEN;
 extern HRESULT DOMDocument_create(MSXML_VERSION, IUnknown*, void**) DECLSPEC_HIDDEN;

dlls/msxml3/text.c

@@ -330,7 +330,7 @@ static HRESULT WINAPI domtext_hasChildNodes(
 {
     domtext *This = impl_from_IXMLDOMText( iface );
     TRACE("(%p)->(%p)\n", This, ret);
-    return node_has_childnodes(&This->node, ret);
+    return return_var_false(ret);
 }
 
 static HRESULT WINAPI domtext_get_ownerDocument(