Incorrect code on user_load

The user_load function doesn't work with passing arrays anymore in drupal 7. This gives following errors on drupal:
array_flip():Can only flip STRING and INTEGER values! in DrupalDefaultEntityController->load()
In each of the submodules this error occurs. The code needs to be changed to this:

if (is_numeric($username)) {
    $user = user_load($username);
  }
  else $user = user_load_by_name($username);

See the complete info on the code issue and associated error here:
http://stackoverflow.com/questions/4798047/array-flipcan-only-flip-strin...