the first one in extension list in export filters is enough for getAllowedExtensionList() result.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk/utils@42435 20353a03-c40f-0410-a6d1-a30d3c3de9de

cloudooo/handler/ooo/mimemapper.py

@@ -141,7 +141,7 @@ class MimeMapper(object):
       filter_type_dict = type_dict.get(filter_type)
       if not ui_name:
         ui_name = filter_type_dict.get("UIName")
-      filter_extension_list = filter_type_dict.get("Extensions")
+      filter_extension_list = filter_type_dict.get("Extensions")[:1]
       mimetype = filter_type_dict.get("MediaType")
       if not (filter_extension_list and mimetype):
         continue