tdf#120824 KDE5: fix visible/enabled state for menu

Change-Id: I003703f0bc2e1697124e068a68bfb2e24c33cd1a
Reviewed-on: https://gerrit.libreoffice.org/68351
Tested-by: Jenkins
Reviewed-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>

vcl/qt5/Qt5Menu.cxx

@@ -157,15 +157,19 @@ QMenu* Qt5Menu::InsertMenuItem(Qt5MenuItem* pSalMenuItem, unsigned nPos)
                     pAction->setChecked(bChecked);
                 }
 
-                pAction->setEnabled(pSalMenuItem->mbEnabled);
-                pAction->setVisible(pSalMenuItem->mbVisible);
-
                 connect(pAction, &QAction::triggered, this,
                         [pSalMenuItem] { slotMenuTriggered(pSalMenuItem); });
             }
         }
     }
 
+    QAction* pAction = pSalMenuItem->getAction();
+    if (pAction)
+    {
+        pAction->setEnabled(pSalMenuItem->mbEnabled);
+        pAction->setVisible(pSalMenuItem->mbVisible);
+    }
+
     return pQMenu;
 }