Several of the unit tests request that the peer emit more than one
signal, but only handle one. The rest of the signals stay queued in the
socket and will be delivered at the next test, causing it to fail often.
This doesn't happen in the tests with the bus. There, we don't receive
the extraneous signals due to AddMatch/ReceiveMatch on each signal
individually and the synchronous nature of the emission (the signals
have already been emitted by the next AddMatch and cannot match it).
Task-number: QTBUG-42145
Change-Id: I743a0553074972042fca46b76db5d9e7b3209620
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@digia.com>
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