Fix #9728 - cron.php fails with "must be compatible" error from AOPIn…

…boundEmail.php

modules/InboundEmail/InboundEmail.php

@@ -3607,7 +3607,7 @@ public function isMailBoxTypeCreateCase()
         return ($this->mailbox_type == 'createcase' && !empty($this->groupfolder_id));
     } // fn
 
-    public function handleCreateCase($email, $userId)
+    public function handleCreateCase(Email $email, $userId)
     {
         global $current_user, $mod_strings, $current_language;
         $mod_strings = return_module_language($current_language, "Emails");