added an empty body to Colorize::init() method on non-Linux systems
added an empty body to Colorize::init() method on non-Linux systems

m13253/backward-cpp,m13253/backward-cpp,Manu343726/backward-cpp,Ghostist/backward-cpp,bombela/backward-cpp,Ghostist/backward-cpp,bombela/backward-cpp,Manu343726/backward-cpp,Manu343726/backward-cpp,bombela/backward-cpp