Guys, when next code can throw `UndeliverableExcep...

# rx

[Eugen Martynov]

Guys, when next code can throw `UndeliverableException`:

private fun notifyEmitterWithException(emitter: MaybeEmitter<*>, e: Exception) {
        if (!emitter.isDisposed) {
            emitter.onError(e)
        }
    }