Make compile on windows

src/windowsWalker.cpp

@@ -2,6 +2,7 @@
 // SPDX-FileCopyrightText: 2022 Harald Sitter <sitter@kde.org>
 
 #include "windowsWalker.h"
+#include <QScopeGuard>
 
 WindowsWalker::WindowsWalker(const QByteArray &path)
     : m_path(path)