[test] Fixed minor clang warning
[test] Fixed minor clang warning

ScazLab/baxter_collaboration,ScazLab/human_robot_collaboration,ScazLab/human_robot_collaboration,ScazLab/human_robot_collaboration,ScazLab/human_robot_collaboration,ScazLab/baxter_collaboration,ScazLab/baxter_collaboration,ScazLab/baxter_collaboration