message: Remove verbose braces
diff: @@ -323,12 +323,10 @@ connection_state instance::handle(execution_unit* ctx, connection_handle hdl,
  }
  // Check the application ID.
  string_list whitelist;
  - if (auto lst = get_if<string_list>(&config(),
  - "middleman.app-identifiers")) {
  - whitelist = std::move(*lst);
  - } else {
  + if (auto ls = get_if<string_list>(&config(), "middleman.app-identifiers"))
  + whitelist = std::move(*ls);
  + else
  whitelist.emplace_back(to_string(defaults::middleman::app_identifier));
  - }
  auto i = std::find_first_of(app_ids.begin(), app_ids.end(),
  whitelist.begin(), whitelist.end());
  if (i == app_ids.end()) {
  