Xcode is a multi-config generator that may not define NDEBUG if CMAKE_BUILD_TYPE is unset and the project is built in Release or RelWithDebInfo via cmake --build. Therefore, be sure to define NDEBUG if it's a non-debug config. Also, simplify the define for _DEBUG. It's OK to double-define something.
Fixes #1524.
Xcode is a multi-config generator that may not define
NDEBUGifCMAKE_BUILD_TYPEis unset and the project is built in Release or RelWithDebInfo viacmake --build. Therefore, be sure to defineNDEBUGif it's a non-debug config. Also, simplify the define for_DEBUG. It's OK to double-define something.