Xiang Li fc8cd44c72 raft: use status to test node stop ...

n.Tick() is async. It can be racy when running with n.Stop().

n.Status() is sync and  has a feedback mechnism internally. So there wont be
any race between n.Status() and n.Stop() call.

2017-01-03 15:18:48 -08:00

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