Fixed syntax error in new XFS quota code (cron)

Author: Florian Schaal

server/plugins-available/cron_plugin.inc.php

@@ -140,7 +140,7 @@ function update($event_name, $data) {
             $file_system = explode(" ", $df_output)[0];
             $primitive_root = explode(" ", $df_output)[1];
 
-            if ( $file_system , array('ext2','ext3','ext4') ) {
+            if ( in_array($file_system , array('ext2','ext3','ext4'),true) ) {
               exec('setquota -u '. $username . ' ' . $blocks_soft . ' ' . $blocks_hard . ' 0 0 -a &> /dev/null');
               exec('setquota -T -u '.$username.' 604800 604800 -a &> /dev/null');
             } elseif ($file_system == 'xfs') {