StarOffice 5.1 was released in 1999, fixing this now

Change-Id: I0b6bf947f7d309820334ed1ac6eae5a29b5c69fb

include/vcl/menubtn.hxx

@@ -66,7 +66,7 @@ public:
 
     void            ExecuteMenu();
 
-    void            SetMenuMode( sal_uInt16 nMode );
+    void            SetMenuMode(sal_uInt16 nMode) { mnMenuMode = nMode; }
 
     void            SetPopupMenu( PopupMenu* pNewMenu );
     PopupMenu*      GetPopupMenu() const { return mpMenu; }

vcl/source/control/menubtn.cxx

@@ -160,12 +160,6 @@ void MenuButton::Select()
     maSelectHdl.Call( this );
 }
 
-void MenuButton::SetMenuMode( sal_uInt16 nMode )
-{
-    // FIXME: It's better to not inline this for 5.1; in 6.0 we can make it inline, however
-    mnMenuMode = nMode;
-}
-
 void MenuButton::SetPopupMenu( PopupMenu* pNewMenu )
 {
     if (pNewMenu == mpMenu)