Strict Standards: Only variables should be passed by reference in sites\all\modules\linkit\linkit.module on line 158

I got this error in my linkit module, i tracked it down to where it renders the form:

change:

print theme('linkit_dashboard', array('form' => render(drupal_get_form('_linkit_form'))));

to

$_form = drupal_get_form('_linkit_form');
print theme('linkit_dashboard', array('form' => render($_form)));

That fixed the error for me