message: GUI: If BIP70 is disabled, attempt to fall back to BIP21 parsing
diff: @@ -292,9 +292,9 @@ void PaymentServer::handleURIOrFile(const QString& s)
  else if (s.startsWith(BITCOIN_IPC_PREFIX, Qt::CaseInsensitive)) // bitcoin: URI
  {
  QUrlQuery uri((QUrl(s)));
  +#ifdef ENABLE_BIP70
  if (uri.hasQueryItem("r")) // payment request URI
  {
  -#ifdef ENABLE_BIP70
  Q_EMIT message(tr("URI handling"),
  tr("You are using a BIP70 URL which will be unsupported in the future."),
  CClientUIInterface::ICON_WARNING);
  @@ -315,19 +315,23 @@ void PaymentServer::handleURIOrFile(const QString& s)
  tr("Payment request fetch URL is invalid: %1").arg(fetchUrl.toString()),
  CClientUIInterface::ICON_WARNING);
  }
  -#else
  - Q_EMIT message(tr("URI handling"),
  - tr("Cannot process payment request because BIP70 support was not compiled in."),
  - CClientUIInterface::ICON_WARNING);
  -#endif
  return;
  }
  - else // normal URI
  + else
  +#endif
  + // normal URI
  {
  SendCoinsRecipient recipient;
  if (GUIUtil::parseBitcoinURI(s, &recipient))
  {
  if (!IsValidDestinationString(recipient.address.toStdString())) {
  +#ifndef ENABLE_BIP70
  + if (uri.hasQueryItem("r")) { // payment request
  + Q_EMIT message(tr("URI handling"),
  + tr("Cannot process payment request because BIP70 support was not compiled in."),
  + CClientUIInterface::ICON_WARNING);
  + }
  +#endif
  Q_EMIT message(tr("URI handling"), tr("Invalid payment address %1").arg(recipient.address),
  CClientUIInterface::MSG_ERROR);
  }
  