Don't put nil into builder engines when glueing nil object.
Don't put nil into builder engines when glueing nil object.

infertux/rabl,infertux/rabl,nesquena/rabl,zoyi/rabl,Jyaasa/rabl,nesquena/rabl,sideci-sample/sideci-sample-rabl,zoyi/rabl,infertux/rabl,nesquena/rabl,Jyaasa/rabl,Jyaasa/rabl,zoyi/rabl,sideci-sample/sideci-sample-rabl