call get_request only if needed

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@40337 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5OOo/OOoUtils.py

@@ -203,8 +203,8 @@ class OOoBuilder(Implicit):
     """
     returns the OOo document
     """
-    request = get_request()
     if name and not(source):
+      request = get_request()
       request.response.setHeader('Content-Disposition',
                               'attachment; filename=%s.%s' % (name, extension))