message: [contour] Config: little code cleanup
diff: @@ -373,7 +373,7 @@ optional<terminal::Key> parseKey(string const& _name)
  auto const name = toLower(_name);
  - for (auto const mapping: mappings)
  + for (auto const& mapping: mappings)
  if (name == toLower(mapping.first))
  return mapping.second;
  