Fix default warning message displaying in Account_getGapItemList.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@7630 20353a03-c40f-0410-a6d1-a30d3c3de9de

bt5/erp5_accounting/SkinTemplateItem/portal_skins/erp5_accounting/Account_getGapItemList.xml

@@ -84,7 +84,7 @@ def sort(x,y):\n
 \n
 gap_root = context.portal_preferences.getPreferredAccountingTransactionGap() \n
 if gap_root is None:\n
-  return [(\'\', \'Set Preferred GAP In preferences !\')]\n
+  return [(\'Set Preferred GAP In preferences !\', \'\')]\n
 \n
 def getGapItemList(gap_root, portal_path): \n
   obj = context.portal_categories.resolveCategory(gap_root)\n