Switch to unsigned integers where appropriate.

serialworker.cpp

@@ -205,7 +205,7 @@ void SerialWorker::sendFrameBatch(const QList<CANFrame> *frames)
     sendBulkMutex.unlock();
 }
 
-void SerialWorker::updateBaudRates(int Speed1, int Speed2)
+void SerialWorker::updateBaudRates(unsigned int Speed1, unsigned int Speed2)
 {
     QByteArray buffer;
     qDebug() << "Got signal to update bauds. 1: " << Speed1 <<" 2: " << Speed2;

serialworker.h

@@ -53,7 +53,7 @@ public slots:
     void closeSerialPort();
     void sendFrame(const CANFrame *) override;
     void sendFrameBatch(const QList<CANFrame> *) override;
-    void updateBaudRates(int, int);
+    void updateBaudRates(unsigned int, unsigned int);
     //void stopFrameCapture(int) override;
     //void startFrameCapture(int)  override;
     void updatePortName(QString) override; //string version of the port to connect to. This base doesnt know a thing about this value