Fix Utils::withNTFSPermissions with void function

Fix up of 9467ed42c3

Change-Id: I24343e5e1440210188742332ec6f725af3412100
Reviewed-by: Eike Ziller <eike.ziller@qt.io>
Reviewed-by: hjk <hjk@qt.io>
Reviewed-by: David Schulz <david.schulz@qt.io>
Reviewed-by: André Hartmann <aha_1980@gmx.de>

src/libs/utils/fileutils.cpp

@@ -792,6 +792,16 @@ QTextStream &operator<<(QTextStream &s, const FileName &fn)
     return s << fn.toString();
 }
 
+#ifdef Q_OS_WIN
+template <>
+void withNTFSPermissions(const std::function<void()> &task)
+{
+    qt_ntfs_permission_lookup++;
+    task();
+    qt_ntfs_permission_lookup--;
+}
+#endif
+
 } // namespace Utils
 
 QT_BEGIN_NAMESPACE