计算采购平均交期时，忽略已经采购数量未0的采购数据

AutoTurnOver.DB/AveragePurchase.cs

@@ -108,7 +108,7 @@ ORDER BY t1.update_time desc LIMIT @seed_count
             parameters.Add("warehouse_code", skuData.warehouse_code);
             parameters.Add("seed_count", seed_count);
             return _connection.Query<dc_base_purchase_dto>(@"select t1.price,t1.bailun_sku,t1.warehouse_code,t1.purchase_id,t1.warehouse_name,t1.count,t1.sku_name,t1.supplier_id,t1.supplier_name,t1.confirm_time,t1.pay_time,t1.pay_type from dc_base_purchase as t1
-where t1.buy_status=4 and t1.bailun_sku=@bailun_sku and t1.warehouse_code=@warehouse_code 
+where t1.buy_status=4 and t1.bailun_sku=@bailun_sku and t1.warehouse_code=@warehouse_code  and t1.count>0
 ORDER BY t1.update_time desc LIMIT @seed_count
  ", parameters);