QT_WINDOW: update for deprecated QVariant::type()

src/module/qt_window/qthelper.hh

@@ -126,7 +126,7 @@ private:
         // "QVariant::Type(obsolete), the return value should be interpreted
         // as QMetaType::Type."
         // So a cast really seems to be needed to avoid warnings (urgh).
-        return static_cast<int>(v.type()) == static_cast<int>(t);
+        return static_cast<int>(v.typeId()) == static_cast<int>(t);
     }
 
     void set(mpv_node *dst, const QVariant &src)