Compile warning

[Hanashi]

i know there's no issue on just little warning but kinda distract me and i would appreciate if anyone can fix it :3

Warning    C4800    'std::size_t': forcing value to bool 'true' or 'false' (performance warning)    csv2yaml    ...\src\tool\csv2yaml.cpp    144 

this is line 143 to 147 under csv2yaml.cpp

    if( !process( "PET_DB", 1, pet_paths, "pet_db", []( const std::string& path, const std::string& name_ext ) -> bool {

        return pet_read_db( ( path + name_ext ).c_str() );

    } ) ){

        return 0;

    }

Edited June 15, 2019 by AshiHanna