[Lazarus] Res leaks on exiting gtk2 app

[Alexey]

  [TGtk2WidgetSet.Destroy] WARNING: There are 19 unreleased GDIObjects, 
a detailed dump follows:

I see I have 19 icons in app, in 3..4 ImageLists. so all icons from 
Imagelists leaked? ImageLists placed in design time. They must free by LCL.

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Regards,
Alexey