profile_privacy_schema: "column fid - difference on: not null"

Hi,

if you check you database via path admin/build/schema/compare, you get the following warning:

"profile_privacy_fields.fid is part of the primary key but is not specified to be 'not null'."
(see attached screenshot as well)

As you can see, attribute 'not null' => TRUE is missing for fid in schema definition:

<?php 

function profile_privacy_schema() {
  $schema['profile_privacy_fields'] = array(
    'fields' => array(
      'fid' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'default' => 0
      ),
      'privacy' => array(
        'type' => 'int',
        'size' => 'tiny',
        'not null' => TRUE,
        'default' => 0
      )
    ),
    'primary key' => array('fid')
  );
?>