Skipping quants in _create_account_move_line

stock_account.py: "return" breaks the for loop and thus only one quant is reported in the accounting... solution: remove the word "return". Or even better would be to sum them up (total+=qty*cost) and then create accounting entry, this way we would avoid multiple valuation entries.

original function:

def _create_account_move_line(self, cr, uid, quants, move, credit_account_id, debit_account_id, journal_id, context=None):
        #group quants by cost
        quant_cost_qty = {}
        for quant in quants:
            if quant_cost_qty.get(quant.cost):
                quant_cost_qty[quant.cost] += quant.qty
            else:
                quant_cost_qty[quant.cost] = quant.qty
        move_obj = self.pool.get('account.move')
        for cost, qty in quant_cost_qty.items():
            move_lines = self._prepare_account_move_line(cr, uid, move, qty, cost, credit_account_id, debit_account_id, context=context)
            return move_obj.create(cr, uid, {'journal_id': journal_id,
                                      'line_id': move_lines,
                                      'period_id': self.pool.get('account.period').find(cr, uid, move.date, context=context)[0],
                                      'date': move.date,
                                      'ref': move.picking_id and move.picking_id.name}, context=context)