message: GUI: If BIP70 is disabled, give a proper error when trying to open a payment request file
diff: @@ -347,9 +347,9 @@ void PaymentServer::handleURIOrFile(const QString& s)
  }
  }
  -#ifdef ENABLE_BIP70
  if (QFile::exists(s)) // payment request file
  {
  +#ifdef ENABLE_BIP70
  PaymentRequestPlus request;
  SendCoinsRecipient recipient;
  if (!readPaymentRequestFromFile(s, request))
  @@ -362,9 +362,13 @@ void PaymentServer::handleURIOrFile(const QString& s)
  Q_EMIT receivedPaymentRequest(recipient);
  return;
  - }
  +#else
  + Q_EMIT message(tr("Payment request file handling"),
  + tr("Cannot process payment request because BIP70 support was not compiled in."),
  + CClientUIInterface::ICON_WARNING);
  #endif
  }
  +}
  void PaymentServer::handleURIConnection()
  {
  