PSS: fix getNodes method
PSS: fix getNodes method

we want to insert even the root node
when no starting point is specified

Signed-off-by: Marek Chalupa <a05df156a69ad59faa9af9b666ef78009594c145@gmail.com>

mchalupa/dg,mchalupa/dg,mchalupa/dg,mchalupa/dg