LabelWidget should have same API as rest ot Widgets.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@26910 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/Formulator/Widget.py

@@ -1144,7 +1144,7 @@ class LabelWidget(Widget):
         width=20, height=3,
         required=0)
 
-    def render(self, field, value, REQUEST=None, render_prefix=None):
+    def render(self, field, key, value, REQUEST=None, render_prefix=None):
         return render_element("div",
                               css_class=field.get_value('css_class'),
                               contents=field.get_value('default'))