Input elements do not add .form-control class using drupal_render

The "problem" is in adding .form-control class in process function _bootstrap_process_input(), which is not launched if you are not using drupal_get_form() for rendering form. So, you can't depend on process functions when writing something like this (my case):

print drupal_render(array('select' => array(
  '#type' => 'select',
  '#title' => t('Select'),
  '#options' => array(
    0 => t('One'),
    ...
    )),
  '#description' => '',
));

In such a case .form-control class will not be added.

I don't know, if this requires change.