Fix Listener null check #204
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Hello Again! We have encountered a problem using this library in our app.
There was a crash. The reason is listener is null.
Please confirm. Thank you.
Caused by rx.exceptions.OnErrorNotImplementedException: Listener must not be null
at rx.internal.util.InternalObservableUtils$ErrorNotImplementedAction.call(InternalObservableUtils.java:386)
at rx.internal.util.InternalObservableUtils$ErrorNotImplementedAction.call(InternalObservableUtils.java:383)
at rx.internal.util.ActionSubscriber.onError(ActionSubscriber.java:44)
at rx.observers.SafeSubscriber._onError(SafeSubscriber.java:153)
at rx.observers.SafeSubscriber.onError(SafeSubscriber.java:115)
at rx.exceptions.Exceptions.throwOrReport(Exceptions.java:216)
at rx.observers.SafeSubscriber.onNext(SafeSubscriber.java:139)
at rx.internal.operators.OnSubscribeDoOnEach$DoOnEachSubscriber.onNext(OnSubscribeDoOnEach.java:101)
at rx.observers.SerializedObserver.onNext(SerializedObserver.java:91)
at rx.observers.SerializedSubscriber.onNext(SerializedSubscriber.java:94)
at rx.internal.operators.OperatorTakeUntil$1.onNext(OperatorTakeUntil.java:45)
at rx.internal.operators.OperatorCast$CastSubscriber.onNext(OperatorCast.java:69)
at rx.internal.operators.OnSubscribeFilter$FilterSubscriber.onNext(OnSubscribeFilter.java:76)
at com.jakewharton.rxrelay.RelaySubscriptionManager$RelayObserver.onNext(RelaySubscriptionManager.java:205)
at com.jakewharton.rxrelay.PublishRelay.call(PublishRelay.java:47)
at com.jakewharton.rxrelay.SerializedAction1.call(SerializedAction1.java:84)
at com.jakewharton.rxrelay.SerializedRelay.call(SerializedRelay.java:20)
at com.kakao.wheel.driver.util.RxBus.post(RxBus.java:11)
at com.kakao.wheel.driver.service.ConnectionService$connect$7.call(ConnectionService.java:264)
at rx.internal.util.ActionSubscriber.onNext(ActionSubscriber.java:39)
at rx.observers.SafeSubscriber.onNext(SafeSubscriber.java:134)
at rx.observers.Subscribers$5.onNext(Subscribers.java:235)
at rx.observers.SerializedObserver.onNext(SerializedObserver.java:91)
at rx.observers.SerializedSubscriber.onNext(SerializedSubscriber.java:94)
at rx.internal.operators.OperatorTakeUntil$1.onNext(OperatorTakeUntil.java:45)
at rx.internal.operators.OnSubscribeRedo$2$1.onNext(OnSubscribeRedo.java:244)
at rx.internal.operators.OnSubscribeDoOnEach$DoOnEachSubscriber.onNext(OnSubscribeDoOnEach.java:101)
at rx.internal.operators.OnSubscribeDoOnEach$DoOnEachSubscriber.onNext(OnSubscribeDoOnEach.java:101)
at rx.observers.Subscribers$5.onNext(Subscribers.java:235)
at rx.observers.Subscribers$5.onNext(Subscribers.java:235)
at rx.internal.operators.OperatorSubscribeOn$1$1.onNext(OperatorSubscribeOn.java:53)
at rx.observers.Subscribers$5.onNext(Subscribers.java:235)
at rx.internal.operators.OnSubscribeMap$MapSubscriber.onNext(OnSubscribeMap.java:77)
at com.kakao.wheel.driver.connection.ChannelOperator.call(ChannelOperator.java:38)
at com.kakao.wheel.driver.connection.ChannelOperator.call(ChannelOperator.java:10)
at rx.Observable.unsafeSubscribe(Observable.java:10142)
at rx.internal.operators.OnSubscribeMap.call(OnSubscribeMap.java:48)
at rx.internal.operators.OnSubscribeMap.call(OnSubscribeMap.java:33)
at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48)
at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30)
at rx.Observable.unsafeSubscribe(Observable.java:10142)
at rx.internal.operators.OperatorSubscribeOn$1.call(OperatorSubscribeOn.java:94)
at rx.internal.schedulers.ScheduledAction.run(ScheduledAction.java:55)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:423)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:154)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:269)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
at java.lang.Thread.run(Thread.java:818)