Bug 5031179 possible fix for assert in join

        mQueueChanged.signal();

    }

    // Don't call join on myself

    // A join on self can happen if the last ref to CallbackDispatcher

    // is released within the CallbackDispatcherThread loop

    status_t status = mThread->join();

    CHECK(status == NO_ERROR);

    if (status != WOULD_BLOCK) {

        // Other than join to self, the only other error return codes are

        // whatever readyToRun() returns, and we don't override that

        CHECK_EQ(status, NO_ERROR);

    }

}

void OMX::CallbackDispatcher::post(const omx_message &msg) {