From 1b66f2c5740504931c78f499a378ba70f18b962c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=BA=91=E6=97=A0=E5=BF=83?= <448901948@qq.com>
Date: Tue, 29 Oct 2019 15:45:29 +0800
Subject: [PATCH] Update Trees.php

If the sha is null then the file will be deleted.
---
 lib/Github/Api/GitData/Trees.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Github/Api/GitData/Trees.php b/lib/Github/Api/GitData/Trees.php
index d514d9f8205..939e8619b73 100644
--- a/lib/Github/Api/GitData/Trees.php
+++ b/lib/Github/Api/GitData/Trees.php
@@ -54,7 +54,7 @@ public function create($username, $repository, array $params)
             }
 
             // If `sha` is not set, `content` is required
-            if (!isset($tree['sha']) && !isset($tree['content'])) {
+            if (!array_key_exists('sha', $tree) && !isset($tree['content'])) {
                 throw new MissingArgumentException("tree.$key.content");
             }
         }