'Link as a node' not necessarely targeting the right node

I was getting erratic links when using the 'link as a node' feature. It's because a file can be in several nodes and it's not a good idea to get the node id value from the table 'file'. Here's a suggestion to correct the problem:

/**
 * Implementation of hook_field_formatter().
 */
function imagecache_field_formatter($field, $item, $formatter, $node) {
  if (empty($item['fid']) && $field['use_default_image']) {
    $item = $field['default_image']; 
  }
  // Views does not load the file for us, while CCK display fields does.
  if (!isset($item['filepath'])) {
    $file = _imagecache_file_load($item['fid']);
    $item = array_merge($item, $file); 
  }
  # FIX:
  $item['nid'] = $node->nid;

  $presetname = preg_replace('/_linked$/', '', $formatter);
  $presetname = preg_replace('/_imagelink$/', '', $presetname); # ericdes
  if ($preset = imagecache_preset_by_name($presetname)) {
    return theme('imagecache_formatter', $field, $item, $formatter);
  }
}

function _imagecache_file_load($fid = NULL) {
  // Don't bother if we weren't passed an fid.
  if (isset($fid) && is_numeric($fid)) {
    $result = db_query('SELECT * FROM {files} WHERE fid = %d', $fid);
    $file = db_fetch_array($result);
    unset($file['nid']); # FIX: That value is a property of that file, many nodes can use that file. 
  }
  return ($file) ? $file : array();
}