twotoasters/Task — pull request #6 by prachigauriar (2014-11-20 05:29:52+00:00)
Title: Prevent multiple graphDidFinish: invocations

In - [TSKGraph subtask:didFinishWithResult:], we need to check that the graph is finished before we exit the barrier block. Otherwise graphDidFinish: can be invoked multiple times.

@jnjosh Please review.