Wrong datatype for second argument module_grants.module on line 366

So now that it seemed that everything was working correctly, I deleted all of my test content and started to add real content to my site while continuing to test.

I created a page node type in an author role, and and then clicked on the '/accessible-content/i-created/' where I now got this warning error:

warning: in_array() [function.in-array]: Wrong datatype for second argument in /Applications/MAMP/htdocs/guilderlanddemocrats-com-d6v12/sites/all/modules/module_grants/module_grants.module on line 366.

This reminded me that I had added the following code as per http://drupal.org/node/158043 to the Drupal index.php for testing the latest dev version of the Revisioning Module when I was getting the White Screen of Death:

error_reporting(E_ALL);
ini_set('display_errors', TRUE);
ini_set('display_startup_errors', TRUE);

With this code removed, I don't get the warning. So I'm guessing it is not critical since it's just a warning and doesn't show up unless error reporting is set at such a high level.

But perhaps it is something that if dealt with could add stability to the module.

Steve