If a signal is emitted more than once in a multithreaded application the
QSignalEventGenerator::execute function asserts in the check for a valid
signal index. It happens after abandoning the state and all the
connections are disconnected. If we have pending signal to be
processed the QObject::sender() won't be able to resolve the sender
object.
Task-number: QTBUG-61463
Change-Id: I9d4b7266c6dddc9ff2e7453b05a6989876ccb332
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
345be58100