propelorm/sfPropelORMPlugin — pull request #153 by rozwell (2012-07-31 13:35:04+00:00)
Title: sfPropelMigrateTask: invalid returned value when there is nothing to migrate

When tasks doesn't fail, they return ***null*** so we can identify there was an error:
```php
dispatcher, new sfFormatter());
if($task->run() !== null){
// ooops! en error occurred!
}
```

But **sfPropelMigrateTask** returned ***false*** not only on error but even when there was nothing to migrate.
I believe it's not an error so simple change ***false*** to ***null*** fixes this issue.