message: Slightly better logging
diff: @@ -1268,7 +1268,7 @@ void QueryDbMainLoop(
  }
  default: {
  - std::cerr << "Unhandled IPC message with kind "
  + std::cerr << "1 Unhandled IPC message with kind "
  << static_cast<int>(message->method_id) << std::endl;
  exit(1);
  }
  @@ -1438,7 +1438,7 @@ void LanguageServerStdinLoop(IpcMessageQueue* ipc) {
  }
  default: {
  - std::cerr << "Unhandled IPC message with kind "
  + std::cerr << "3 Unhandled IPC message with kind "
  << static_cast<int>(message->method_id) << std::endl;
  exit(1);
  }
  @@ -1464,7 +1464,7 @@ void LanguageServerMainLoop(IpcMessageQueue* ipc) {
  }
  default: {
  - std::cerr << "Unhandled IPC message with kind "
  + std::cerr << "2 Unhandled IPC message with kind "
  << static_cast<int>(message->method_id) << std::endl;
  exit(1);
  }
  