fix for ScheduledObserver
fix for ScheduledObserver

alexeymarkov/RxCpp,alexeymarkov/RxCpp,Reactive-Extensions/RxCpp,ReactiveX/RxCpp,Reactive-Extensions/RxCpp,ReactiveX/RxCpp,ReactiveX/RxCpp,alexeymarkov/RxCpp,Reactive-Extensions/RxCpp