qt: Remove QFont warnings with QPA=minimal

src/qt/guiutil.cpp

@@ -48,13 +48,14 @@
 #include <QKeyEvent>
 #include <QLineEdit>
 #include <QList>
+#include <QMenu>
 #include <QMouseEvent>
 #include <QProgressDialog>
 #include <QScreen>
 #include <QSettings>
+#include <QShortcut>
 #include <QSize>
 #include <QString>
-#include <QShortcut>
 #include <QTextDocument> // for Qt::mightBeRichText
 #include <QThread>
 #include <QUrlQuery>
@@ -910,4 +911,11 @@ void LogQtInfo()
     }
 }
 
+void PopupMenu(QMenu* menu, const QPoint& point, QAction* at_action)
+{
+    // The qminimal plugin does not provide window system integration.
+    if (QApplication::platformName() == "minimal") return;
+    menu->popup(point, at_action);
+}
+
 } // namespace GUIUtil