dabohealth/promenade — pull request #75 by ericzou (2014-06-09 21:23:52+00:00)
Title: nulify the queuWoker before resolve happends

I experienced a weird bug where queue was never completed. Upon investigating with @cdata, we discovered that the resolve happens synchronously, which allow the observer of the queue to fire before the we null the worker, and potentially leave the worker in an none-null state.

The PR intents to guarantee the worker is nulled when the queue completes.