Thomas Haller authored May 01, 2019 and Lubomir Rintel committed May 21, 2019

In practice, there is no difference when representing 0 or 1 as signed/unsigned 32
bit integer. But still use the correct type that also kernel uses.

Also, the implicit conversation from uint32 to bool was correct already.
Still, explicitly convert the uint32 value to boolean in _new_from_nl_qdisc().
It's no change in behavior.

(cherry picked from commit a1099a1f)