From bbaf03c2efec48720c67dbaa8f3b2aab6a112786 Mon Sep 17 00:00:00 2001
From: oleibman <eclipsechasers2@yahoo.com>
Date: Sun, 31 May 2020 11:18:47 -0700
Subject: [PATCH] Update Html.php

Travis says no need to initialize private class variable to null.
---
 src/PhpSpreadsheet/Writer/Html.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/PhpSpreadsheet/Writer/Html.php b/src/PhpSpreadsheet/Writer/Html.php
index 942685f6..752f286f 100644
--- a/src/PhpSpreadsheet/Writer/Html.php
+++ b/src/PhpSpreadsheet/Writer/Html.php
@@ -136,7 +136,7 @@ class Html extends BaseWriter
      *
      * @var null|callable
      */
-    protected $editHtmlCallback = null;
+    protected $editHtmlCallback;
 
     /**
      * Create a new HTML.