Minor change: include header

mainwindow.cpp

@@ -5,6 +5,7 @@
 
 #include <QDateTime>
 #include <QMessageBox>
+#include <QDebug>
 
 MainWindow::MainWindow(Worker *worker, QWidget *parent)
     : QMainWindow(parent)
@@ -71,7 +72,6 @@ void MainWindow::onQuit() {
 }
 
 void MainWindow::onSetProgress(quint8 v) {
-    qCritical() << "SET VAL" << v;
     ui->updateProgress->setValue(v);
 }