Could not evaluate: invalid byte sequence in UTF-8

Bugfix for this error... Exec[pear-drush]: Could not evaluate: invalid byte sequence in UTF-8"

This problem appears when I try to install Drush:

```
php::pear::module { 'drush':
    repository  => 'pear.drush.org',
    alldeps => 'true',
    use_package => "false",
  }
```

because "pear info pear.drush.org/drush" as UTF-8 encoding errors :(