Fixed handler macros to remove warnings in gcc
Fixed handler macros to remove warnings in gcc

Astron/yaml-cpp,oftc/yaml-cpp,Astron/yaml-cpp,gradecam/yaml-cpp,vadz/yaml-cpp,gradecam/yaml-cpp,Astron/yaml-cpp,vadz/yaml-cpp,gradecam/yaml-cpp,oftc/yaml-cpp,oftc/yaml-cpp,gradecam/yaml-cpp,vadz/yaml-cpp,Astron/yaml-cpp