By just setting state to nullptr.
Pick-to: 6.5
Task-number: QTBUG-105105
Change-Id: I6b4f8fe39f1ba51dcfaf98ce7e42c2acd4c4cf98
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
(cherry picked from commit 10f5e4f8099136bce59f5f859df89c5b2e695fc9)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>