verify subscription by validity of universe pointer
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@ -99,7 +99,7 @@ void QSacnNode::unsubscribe(const uint16_t num)
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break;
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default:
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{
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if (Receiver::isSubscribed(num)) {
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if (Receiver::universe(num)) {
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qDebug() << "Unsubscribing from universe " << QString::number(num);
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emit unsubscribing(rx_universes.value(num));
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rx_universes.take(num)->deleteLater();
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