Since qtbase/589bfddc7c44a92e7e3f98a1e73871793c153ab7 QWinRegistryKey has a new data member, m_keyChangedEvent, which is not swapped in swap(), therefore not moved in move-assignment (implemented via move-and-swap), and not exchange()d in the move ctor.

It's unclear what the severity of this omission is, and it's also unclear to me how to fix it, given that m_keyChangedEvent is bound to both the m_key and the QObject identity.

Maybe as a hot-fix, we can disable moves?