411a213f65
QObject::disconnect(connection) already sets connection.d_ptr to
nullptr, and the default constructor only does that:
QMetaObject::Connection::Connection() : d_ptr(nullptr) {}
So calling disconnect() suffices in this case.
Pick-to: 6.5 6.2
Change-Id: Icd5f9a15c83939eeecd9efb474ac3b38c0f2dfe4
Reviewed-by: Axel Spoerl <axel.spoerl@qt.io>
(cherry picked from commit 3bac47336483d720c1d7376ea053c03a4e80173c)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>