Change operator which is more python aware

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@18899 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Form/ListBox.py

@@ -2112,7 +2112,7 @@ class ListBoxHTMLRendererLine(ListBoxRendererLine):
         else:
           # JPS-XXX - I think we should not display a URL for objects
           # which do not have the View permission
-          if type(url) == str:
+          if type(url) is str:
             url = unicode(url.decode('utf-8'))
           html = u'<a href="%s">%s</a>' % (url, processed_value)