[FIX] stock: on partial picking, do no open a new window action if not needed

This is related to rev. dd4d72d7

Not opening a new window action allows to keep the current list of stock picking being threated, and to use the next an previous arrow of the forom view of the web client.

addons/stock/wizard/stock_partial_picking.py

@@ -218,6 +218,8 @@ class stock_partial_picking(osv.osv_memory):
         # We don't need to find which view is required, stock.picking does it.
         done = stock_picking.do_partial(
             cr, uid, [partial.picking_id.id], partial_data, context=context)
+        if done[partial.picking_id.id]['delivered_picking'] == partial.picking_id.id:
+            return {'type': 'ir.actions.act_window_close'}
         return {
             'type': 'ir.actions.act_window',
             'res_model': context.get('active_model', 'stock.picking'),