qdeclarativepropertycache not correctly cleared.

Attached is an example application to reproduce the issue. It creates two dialogs (the second dialog is created after the fist one has been destroyed) that have QDeclarativeView as a child. Overloaded C++ slots are called from the
QDeclarativeView's QML component.

1) Run the example: you get a dialog with a label and a QML rectangle element.
2) Click the rectangle, it turns red and the label will get the last value that is set from QML.
3) Close the dialog.
4) The second dialog is created and executed.
5) Click again the rectangle and you will see the error: wrong slot is called (it never should be called because the overloaded parameter (QTime) is never used) and the label shows the error message.