message: [vcpkg] Fix toolsrc CMake build error
diff: @@ -717,9 +717,9 @@ namespace vcpkg::Files
  virtual fs::path absolute(const fs::path& path, std::error_code& ec) const override
  {
  -#if USE_STD_FILESYSTEM
  +#if VCPKG_USE_STD_FILESYSTEM
  return fs::stdfs::absolute(path, ec);
  -#else // ^^^ USE_STD_FILESYSTEM / !USE_STD_FILESYSTEM vvv
  +#else // ^^^ VCPKG_USE_STD_FILESYSTEM / !VCPKG_USE_STD_FILESYSTEM vvv
  #if _WIN32
  // absolute was called system_complete in experimental filesystem
  return fs::stdfs::system_complete(path, ec);
  