Add missing UpdateDialog.cpp file

MD-19678 #time 5m

src/UpdateDialog.cpp

@@ -0,0 +1,25 @@
+#include "UpdateDialog.h"
+
+UpdateDialog::UpdateDialog()
+: m_autoClose(false)
+{
+}
+
+void UpdateDialog::setAutoClose(bool autoClose)
+{
+	m_autoClose = autoClose;
+}
+
+bool UpdateDialog::autoClose() const
+{
+	return m_autoClose;
+}
+
+void UpdateDialog::updateFinished()
+{
+	if (m_autoClose)
+	{
+		quit();
+	}
+}
+