显示优化，物流下单增补逻辑

sf_bf_connect/models/jd_eclp.py

@@ -56,7 +56,7 @@ class JdEclp(models.Model):
         """
         res = super(JdEclp, self).button_validate()
         if self.check_out == 'OUT':
-            if self.logistics_way != '自提':
+            if self.logistics_way != '自提' and self.logistics_way:
                 if self.logistics_status != '2':
                     raise ValidationError('非自提订单，必须先下物流单，并获取物流面单后才可出库！')
         return res