Before this fix, QStandardItemModel::itemData returns
a map containing role 255 which is used internally to store the flags.
This role is an undocumented implementation detail so it should
not be returned to the user.
[ChangeLog][QtGui][QStandardItemModel] itemData does not return role 255
Change-Id: Ibead3cba84cfe92b3c664bc8ce87508cbcbdc9bd
Reviewed-by: David Faure <david.faure@kdab.com>
dc73a691bf