From 956593ad0244eb44103cd6f6bb27b8e5b701605f Mon Sep 17 00:00:00 2001
From: Jerry Wu <wzhongyuan@gmail.com>
Date: Thu, 21 Sep 2017 10:16:16 +0800
Subject: [PATCH] Handle null array (#1571)

* fix type comparision

* handle null value array

* fix type diff