common.inc, drupal_system_listing not setting up sites/all directory correctly

I've installed drupal 5, beta 1 and implemented the sites/all directory

I currently have a structure like this

sites
  |_all
     |_modules
     |     |_foo
     |        |_foo.module
     |
     |_themes
         |_bar_theme

In the comments for the function it states $directory for example being 'modules' but then later it sets up sites/all like so...

// Always search sites/all/* as well as the global directories
$searchdir[] = 'sites/all';

I believe it should be
$searchdir[] = 'sites/all/' . $directory;

this would put it in line with how config and profile are set up...
$searchdir[] = "profiles/$profile/$directory";
...
$searchdir[] = "$config/$directory";

I attached a patch (just a one line fix). (let me know if it is in the correct format)