Add use wcf\util\ArrayUtil; and fix Fatal error: Class 'wcf\acp\form\ArrayUtil' not...

diff --git a/wcfsetup/install/files/lib/acp/form/PackageUpdateSearchForm.class.php b/wcfsetup/install/files/lib/acp/form/PackageUpdateSearchForm.class.php
old mode 100755 (executable)
new mode 100644 (file)
index c976c23..87dfc87
--- a/wcfsetup/install/files/lib/acp/form/PackageUpdateSearchForm.class.php
+++ b/wcfsetup/install/files/lib/acp/form/PackageUpdateSearchForm.class.php
@@ -7,6 +7,7 @@ use wcf\system\exception\UserInputException;
 use wcf\system\package\PackageUpdateDispatcher;
 use wcf\system\WCF;
 use wcf\system\WCFACP;
+use wcf\util\ArrayUtil;
 use wcf\util\HeaderUtil;
 use wcf\util\StringUtil;