Filter nulls from list of children.
Filter nulls from list of children.

--HG--
extra : convert_revision : 5f4f5815ea854ee6038285161a65324288036720

beqabeqa473/Asra,beqabeqa473/Asra,bramd/spiel,bramd/spiel,beqabeqa473/Asra,bramd/spiel