Accept Merge Request #1609: (feature/manufactur_order -> develop)

Merge Request: 手动创建的采购单生成的内部调拨单没有源单据

Created By: @管欢
Reviewed By: @胡尧
Approved By: @胡尧 
Accepted By: @管欢
URL: https://jikimo-hn.coding.net/p/jikimo_sfs/d/jikimo_sf/git/merge/1609

sf_manufacturing/models/stock.py

@@ -993,7 +993,8 @@ class ReStockMove(models.Model):
                 production = self.env['mrp.production'].search([('name', '=', self[0].origin)], limit=1, order='id asc')
                 productions = self.env['mrp.production'].search(
                     [('origin', '=', production.origin), ('product_id', '=', production.product_id.id)])
-                res['origin'] = ','.join(productions.mapped('name'))
+                if productions.mapped('name'):
+                    res['origin'] = ','.join(productions.mapped('name'))
                 res['retrospect_ref'] = production.product_id.name
         return res