Recover if tox fails to start

src/core/core.cpp

@@ -253,6 +253,13 @@ void Core::start()
 
     qsrand(time(nullptr));
 
+    if (!tox)
+    {
+        ready = true;
+        GUI::setEnabled(true);
+        return;
+    }
+
     // set GUI with user and statusmsg
     QString name = getUsername();
     if (!name.isEmpty())

src/widget/widget.cpp

@@ -414,6 +414,7 @@ void Widget::onFailedToStartCore()
 
 void Widget::onBadProxyCore()
 {
+    Settings::getInstance().setProxyType(0);
     QMessageBox critical(this);
     critical.setText(tr("toxcore failed to start with your proxy settings. qTox cannot run; please modify your "
                "settings and restart.", "popup text"));