2.x: fix Single.takeUntil() other triggering twice #4962
Merged
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This PR fixes the double termination of
Single.takeUntil(Publisher)
when theother
fires an item and then completes while ignoring the cancellation in between, trying to signal aCancellationException
again which is routed to theRxJavaPlugins.onError
and crashing on Android.In addition, the
Maybe.takeUntil()
received a unit test verifying this doesn't also happen to it.Related: #4961.