"break" used when should be "return"

In the following function, the code checks for $displaymode=='none' before exiting from the function. This should use "return" (from the function) not "break" (from a loop/switch) like it does now.

function updown_comment_preprocess_comment(&$variables) {
  $node = $variables['node'];// handy shorthand
  // we allow for different voting options on comments based on the node-type
  if (variable_get('updown_comment_'. $node->type, FALSE)) {
    $comment = $variables['comment'];
    $display_mode = variable_get('updown_comment_display_'. $node->type, 'beginning');
    if ($display_mode == 'none') {
      break; // don't double-run the token generator
    }
    $widget = (user_access('rate content with updown')) ? theme('updown_active_widget', 'comment', $comment->cid, variable_get('updown_unvote_comment_'. $node->type, FALSE), variable_get('updown_votedown_comment_'. $node->type, TRUE)) : theme('updown_inactive_widget', 'comment', $comment->cid);
    switch ($display_mode) {
      case 'beginning':
        // add widget to start of comment content
        $variables['content'] = $widget . $comment->comment;
        break;
      case 'end':
        $variables['content'] .= $widget;
        break;
      case 'vars':
        $variables['updown'] = $widget;
        break;
    }
  }
}