1.x: Flaky test OperatorObserveOnTest.testQueueFullEmitsErrorWithVaryingBufferSize

[artem-zinnatullin]

Fails constantly on my dev machine today and now I saw it on Travis.

rx.internal.operators.OperatorObserveOnTest > testQueueFullEmitsErrorWithVaryingBufferSize FAILED
    java.lang.AssertionError: expected:<1> but was:<0>
        at org.junit.Assert.fail(Assert.java:93)
        at org.junit.Assert.failNotEquals(Assert.java:647)
        at org.junit.Assert.assertEquals(Assert.java:128)
        at org.junit.Assert.assertEquals(Assert.java:472)
        at org.junit.Assert.assertEquals(Assert.java:456)
        at rx.internal.operators.OperatorObserveOnTest.testQueueFullEmitsErrorWithVaryingBufferSize(OperatorObserveOnTest.java:631)

[akarnokd]

Yep, fixed in #3795 awaiting review...

[akarnokd]

Fixed separately in #3825.