Error when update Quantity On Hand for Product with real-time valuation

[Kitti Upariphutthiphong]

Based on trunk version,
(Build 544)
server (4613)
addons (8155)
web (3518)

Error when update Quantity On Hand for Product with real-time valuation

Step:
====
1. Change warehouse setting --> Generate accounting entries per stock movement
2. Change product, i.e., USB Adapter to use Inventory Valuation = Real Tim + Add input and output accounting
3. On Product's Inventory tab, update Quantity On Hand to anything.
4. Error,

  File "/home/kittiu/workspace/openerp_trunk/addons/stock/stock.py", line 2448, in action_done
    self._create_product_valuation_moves(cr, uid, move, context=context)
  File "/home/kittiu/workspace/openerp_trunk/addons/stock/stock.py", line 2407, in _create_product_valuation_moves
    'ref': move.picking_id and move.picking_id.name})
  File "/home/kittiu/workspace/openerp_trunk/addons/account/account.py", line 1442, in create
    c['period_id'] = vals['period_id']
KeyError: 'period_id'