Accessing a var property of a QObject with QML-ownership which has been scheduled for deletion causes crash

When a QML-owned wrapped-QObject is collected by the gc, the QObject itself is deleteLater()'d, and the v8data associated with it is destroyed. If a client attempts to access a property of that QObject ptr prior to the DeferredDeletion event being handled (and thus the QObject being deleted), if that property happens to be a var property, a crash will occur.