QItemSelectionModel: More fixes for is(Column/Row)Selected

Replace the code for isRowSelected and isColumnSelected with
a much simpler algorithm for deciding if a row/column is selected.

In a model with a cross-hatch of unselectable indexes, the return values
of is(Column/Row)Selected would depend on the order in which the
selections were done.

Task-number: QTBUG-18001
Change-Id: I6aa4b1df7c07fae469a686041927fa8c42bc9b16
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>

0 files changed, 0 insertions, 0 deletions