cnp: remove redundant code
cnp: remove redundant code

Summary: Remove redundant NULL assign code

Reviewers: cedric, Hermet, JackDanielZ

Reviewed By: JackDanielZ

Subscribers: seoz

Differential Revision: https://phab.enlightenment.org/D2782

FlorentRevest/Elementary,rvandegrift/elementary,tasn/elementary,rvandegrift/elementary,tasn/elementary,tasn/elementary,tasn/elementary,FlorentRevest/Elementary,FlorentRevest/Elementary,rvandegrift/elementary,tasn/elementary,rvandegrift/elementary,FlorentRevest/Elementary