Demo model not accessing config delimiter entries for validation

[sp00n]

In the /demo_files/application/models/demo_auth_model.php you're running the validation with fixed strings as their delimiters, like so:

// Set validation errors.
$this->data['message'] = validation_errors('<p class="error_msg">', '</p>');

instead of accessing the config file entries, which I assume (i.e. it works for me, but may not be the best way to access) would look like this:

// Set validation errors.
$this->data['message'] = validation_errors($this->auth->message_settings['delimiters']['error_prefix'], $this->auth->message_settings['delimiters']['error_suffix']);

As a demo this is probably fine, but if people (like me) just copy&paste your demo code and begin working on that as a basis, this might slip their mind and later on they might be wondering why the changes in the config file aren't represented in the actual output.