symfony/MonologBundle — pull request #61 by xabbuh (2013-11-22 20:54:53+00:00)
Title: fix check to not raise E_NOTICEs

Imagine this *invalid* configuration:

```yml
monolog:
handlers:
buffered:
type: buffer
```

With the current implementation you get an ``E_NOTICE``: ``Notice: Undefined index: handler``