In package selection page, treeview cell data callback function not cover the 'else' case, so parent item will render the pervious value.
(Bitbake rev: 98694c1dbc276cc151f393db67bfd43442da28ba)
Signed-off-by: Liming An <limingx.l.an@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>