lib/dirio.js
function _aliasRead(item, callback, err, orig) {
  if (err) return callback(err);
  item.orig = orig;
  callback(null, item);
}
function _aliasRead(item, callback, err, orig) {
  if (err) return callback(err);
  item.orig = orig;
  callback(null, item);
}
function _aliasRead ( item , callback , err , orig ) { if ( err ) return callback ( err ) ; item . orig = orig ; callback ( null , item ) ; }
Updates the item with path to its original file.
@param {Object} item - Object representing investigated symbolic link.
@param {Function} callback - Callback that expects a possible error
and the item.
@param {*} err - Possible error passed by caller.
@param {String} orig - Content of the symbolic link.
Updates the item with path to its original file .