message: [vcpkg_Input] Add missing const
diff: @@ -13,7 +13,7 @@ namespace vcpkg::Input
  {
  const std::string as_lowercase = Strings::ascii_to_lowercase(package_spec_as_string);
  auto expected_spec = FullPackageSpec::from_string(as_lowercase, default_triplet);
  - if (auto spec = expected_spec.get())
  + if (const auto spec = expected_spec.get())
  {
  return PackageSpec{spec->package_spec};
  }
  @@ -41,7 +41,7 @@ namespace vcpkg::Input
  {
  const std::string as_lowercase = Strings::ascii_to_lowercase(full_package_spec_as_string);
  auto expected_spec = FullPackageSpec::from_string(as_lowercase, default_triplet);
  - if (auto spec = expected_spec.get())
  + if (const auto spec = expected_spec.get())
  {
  return *spec;
  }
  