Fix case where there is no exception: error_log.raising raises given exc_info if it's a tuple, to make it latest exception and let python logging module get it by itself. But this attemp causes another error if excpetion is None (!), which in turn hides original exception...


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@24101 20353a03-c40f-0410-a6d1-a30d3c3de9de