ignoring closing of QtCreator on update leads to corrupt SDK

If QtCreator is running while it's being updated from MaintenanceTool, user is asked to stop the process

Error during uninstallation process:\nThis process should be stopped before continuing: C:/work/Qt/Tools/QtCreator/bin/qtcreator.exe

The dialog has Retry and Ignore buttons. Pushing the Ignore button (and leaving QtCreator running) leads to corrupt SDK as the update fails.

Instead of Ignore button, the dialog should have Cancel button, that cancels the whole update process while it's still safe to do so.