SQL syntax error in update_foes()

In includes/functions_admin.php on line 2607, the function update_foes() attempts to execute an invalid SQL query. This will trigger an error whenever the administrator updates a user account.

The syntax error is a missing space after "DELETE FROM". See below:

		if ($db->multi_table_deletion)

		{

			$sql = 'DELETE FROM' . ZEBRA_TABLE . ' z

				USING ' . USER_GROUP_TABLE . ' ug

				WHERE z.zebra_id = ug.user_id

					AND z.foe = 1

					AND ' . $db->sql_in_set('ug.group_id', $groups);

			$db->sql_query($sql);