Enable access to shutdown functions when configured with --disable-gui option

src/base/utils/misc.h

@@ -67,8 +67,9 @@ namespace Utils
         QString parseHtmlLinks(const QString &raw_text);
         bool isUrl(const QString &s);
 
-#ifndef DISABLE_GUI
         void shutdownComputer(const ShutdownDialogAction &action);
+
+#ifndef DISABLE_GUI
         // Get screen center
         QPoint screenCenter(QWidget *win);
         QSize smallIconSize();