Related: tdf#122241 improve applying persona for additional menubars

Change-Id: Ic968b022e3b37a9329ca29708f53b36f0e7b2ce9
Reviewed-on: https://gerrit.libreoffice.org/66797
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

vcl/unx/gtk/gtksalmenu.cxx

@@ -848,6 +848,8 @@ void GtkSalMenu::CreateMenuBarWidget()
     gtk_widget_show_all(mpMenuBarContainerWidget);
 
     ShowCloseButton( static_cast<MenuBar*>(mpVCLMenu.get())->HasCloseButton() );
+
+    ApplyPersona();
 #else
     (void)mpMenuAllowShrinkWidget;
     (void)mpMenuBarContainerWidget;