potential open_basedir error with include_once

Under some circumstances, this can be critical:

My Drupal 4.7.4 (running on newly installed PHP5.0.3) throws an error like this:

    * warning: main() [function.main]: open_basedir restriction in effect. File(/actions.inc) is not within the allowed path(s): 
      (/var/www/vhosts/mydomain/httpdocs:/tmp) in /var/www/vhosts/mydomain/httpdocs/modules/actions/actions.module on line 659.
    * warning: main(actions.inc) [function.main]: failed to open stream: Operation not permitted in 
       /var/www/vhosts/mydomain/httpdocs/modules/actions/actions.module on line 659.
    * warning: main() [function.include]: Failed opening 'actions.inc' for inclusion (include_path='.:') in 
      /var/www/vhosts/mydomain/httpdocs/modules/actions/actions.module on line 659.

line 659 reads

  include_once('actions.inc');

but it better should read (if I am right)

  include_once(drupal_get_path('module', 'actions') .'/actions.inc');

This fixes the error.

Can somebody please check this?
Thanks