Netflix/RxJava — pull request #1355 by akarnokd (2014-06-12 10:28:30+00:00)
Title: Don't add the subscriber to the manager if it unsubscribed during the on...

...Start call

This may happen, for example, when subscribing to a ReplaySubject containing some elements and taking fewer elements than available. In the original, the logic opened a small window where the SubjectSubscriber could get an onNext event even if the actual Subscriber was already unsubscribed at that point.