Fix build warnings#203

Merged

LewisLiuPub merged 6 commits intointel:dev-ov.2021.3from

LewisLiuPub:dev-ov.2021.3

Apr 15, 2021

Commits on Nov 8, 2020

Merge branch 'dev-ov.2020.3' of https://github.com/intel/ros2_openvino_toolkit into dev-ov.2020.3
LewisLiuPub
committed

Commits on Dec 30, 2020

Merge branch 'dev-ov.2020.3' of https://github.com/lewisliupub/ros2_openvino_toolkit into dev-ov.2020.3
LewisLiuPub
committed

Commits on Mar 29, 2021

Merge branch 'dev-ov.2020.3' of https://github.com/intel/ros2_openvino_toolkit into dev-ov.2020.3
LewisLiuPub
committed

Commits on Mar 31, 2021