Fixed ary_sort problem.

src/empty_trash.php

@@ -16,7 +16,8 @@
    include("../functions/page_header.php");
    include("../functions/display_messages.php");
    include("../functions/imap.php");
-   include("../functions/array.php");
+   if (!function_exists("ary_sort"))
+      include("../functions/array.php");
 
    if (!isset($tree_php))
       include("../functions/tree.php");