when there was a delta in the inventory and the account had a non zero balance.
Also add a few reindex in the tests, some effects of this problem were that
there was some errors when indexing a balance twice.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@36473 20353a03-c40f-0410-a6d1-a30d3c3de9de