refactor: Use bilingual_str::empty()

Author: hebasto

src/qt/walletcontroller.cpp

@@ -245,7 +245,7 @@ void CreateWalletActivity::finish()
 {
     destroyProgressDialog();
 
-    if (!m_error_message.original.empty()) {
+    if (!m_error_message.empty()) {
         QMessageBox::critical(m_parent_widget, tr("Create wallet failed"), QString::fromStdString(m_error_message.translated));
     } else if (!m_warning_message.empty()) {
         QMessageBox::warning(m_parent_widget, tr("Create wallet warning"), QString::fromStdString(Join(m_warning_message, Untranslated("\n")).translated));
@@ -286,7 +286,7 @@ void OpenWalletActivity::finish()
 {
     destroyProgressDialog();
 
-    if (!m_error_message.original.empty()) {
+    if (!m_error_message.empty()) {
         QMessageBox::critical(m_parent_widget, tr("Open wallet failed"), QString::fromStdString(m_error_message.translated));
     } else if (!m_warning_message.empty()) {
         QMessageBox::warning(m_parent_widget, tr("Open wallet warning"), QString::fromStdString(Join(m_warning_message, Untranslated("\n")).translated));