[FIX]:wrong currency rounding : case(18123) for Account Voucher

bzr revid: ado@tinyerp.com-20111115125257-ceblftn7o3pgnvf2

diff --cc addons/account_voucher/account_voucher.py
index 26024b3,92a0a5a..8fcbf5f
--- 1/addons/account_voucher/account_voucher.py
--- 2/addons/account_voucher/account_voucher.py
+++ b/addons/account_voucher/account_voucher.py
@@@ -856,7 -856,7 +856,7 @@@ class account_voucher_line(osv.osv)
          'date_original': fields.related('move_line_id','date', type='date', relation='account.move.line', string='Date', readonly=1),
          'date_due': fields.related('move_line_id','date_maturity', type='date', relation='account.move.line', string='Due Date', readonly=1),
          'amount_original': fields.function(_compute_balance, method=True, multi='dc', type='float', string='Original Amount', store=True),
--        'amount_unreconciled': fields.function(_compute_balance, method=True, multi='dc', type='float', string='Open Balance', store=True),
++        'amount_unreconciled': fields.function(_compute_balance, method=True, multi='dc', type='float', string='Open Balance', store=True, digits_compute=dp.get_precision('Account')),
          'company_id': fields.related('voucher_id','company_id', relation='res.company', type='many2one', string='Company', store=True, readonly=True),
      }
      _defaults = {