New install sets all provider allow variables to FALSE

If there are no previous variables set for a video provider, the allow variable for that provider is set to FALSE. Culprit code:

<?php
  $test = variable_get('emfield_video_cck_allow_'. $provider->name, NULL) || variable_get('video_cck_allow_'. $provider->name, NULL);
?>

As you can see, if neither variables are found, $test gets set to FALSE, not NULL.