Fix up a crash that could happen if a gvret device was not connected when starting savvycan (when it was connected when savvycan closed)

connections/gvretserial.cpp

@@ -342,26 +342,32 @@ void GVRetSerial::connectDevice()
             serial->setBaudRate(115200);
             if (!serial->open(QIODevice::ReadWrite))
             {
-                qDebug() << serial->errorString();
+                //qDebug() << serial->errorString();
             }
+            else
+            {
                 serial->setDataTerminalReady(false); //ESP32 uses these for bootloader selection and reset so turn them off
                 serial->setRequestToSend(false);
                 QTimer::singleShot(3000, this, SLOT(tcpConnected())); //give ESP32 some time as it probably rebooted
             }
+        }
         else
         {
             serial->setFlowControl(serial->HardwareControl); //this is important though
             serial->setBaudRate(1000000);
             if (!serial->open(QIODevice::ReadWrite))
             {
-                qDebug() << serial->errorString();
+                //qDebug() << serial->errorString();
             }
+            else
+            {
                 serial->setDataTerminalReady(true); //you do need to set these or the fan gets dirty
                 serial->setRequestToSend(true);
                 tcpConnected(); //well, not a proper function name I guess...
             }
         }
     }
+}
 
 void GVRetSerial::tcpConnected()
 {
@@ -511,9 +517,13 @@ void GVRetSerial::serialError(QSerialPort::SerialPortError err)
         killConnection = true;
         break;
     }
+    /*
+    if (serial)
+    {
         serial->clearError();
         serial->flush();
         serial->close();
+    }*/
     if (errMessage.length() > 1)
     {
         qDebug() << errMessage;