fix Warning

qt6-after/qt6-migrated-legatus/TetraIF/PrtCnv/LastTestAuswertung/mainwindow.cpp

@@ -139,7 +139,7 @@ void MainWindow::readFiles()
       
       QByteArray ar = file.read(150);
       file.close();
-      if (ar.count() > 36)
+      if (ar.size() > 36)
       {
         QString issi = getISSI(ar);
         QByteArray bytes = ar;
@@ -278,7 +278,7 @@ QString MainWindow::getISSI(QByteArray ar)
   ar.remove(4, 200);
   QByteArray issi = ar.toHex();
   
-  if (ar.count() == 4)
+  if (ar.size() == 4)
   {
     if (ar[2] == '\0' && ar[3] == '\0')
     {
@@ -421,7 +421,7 @@ void MainWindow::writeLogZeiten(const QDateTime &beginn, const QDateTime &end, c
   msg += end.toString(QLatin1String("hh:mm:ss"));
   msg += QLatin1Char('\n');
   QFile file(m_logZeiten);
-  file.open(QIODevice::Append | QIODevice::Text);
+  (void)file.open(QIODevice::Append | QIODevice::Text);
   file.write(msg.toUtf8());
   file.close();