From 85cdc6b211307a625e44691f2780d0cc18451f6d Mon Sep 17 00:00:00 2001
From: qkqpttgf <45693631+qkqpttgf@users.noreply.github.com>
Date: Mon, 18 Jan 2021 15:04:42 +0800
Subject: [PATCH] fix bug: error drive will 500

---
 common.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/common.php b/common.php
index 99d089e..7290ad0 100644
--- a/common.php
+++ b/common.php
@@ -417,6 +417,7 @@ function baseclassofdrive($d = null)
 
 function extendShow_diskenv($drive)
 {
+    if (!$drive) return [];
     return $drive->ext_show_innerenv();
 }