fix some tree model annotations
fix some tree model annotations

* gtk_tree_model_iter_next - 'inout' is poorly defined and causes bugs so
  revert back to the default 'in' annotation
* gtk_tree_path_get_indices_with_depth - annotate the return as 'transfer none'
  to avoid double frees

jigpu/gtk,jessevdk/gtk,Distrotech/gtk2,davidgumberg/gtk,jigpu/gtk,ebassi/gtk,simokivimaki/gtk,Sidnioulz/SandboxGtk,chergert/gtk,davidt/gtk,davidgumberg/gtk,Lyude/gtk-,msteinert/gtk,alexlarsson/gtk,jadahl/gtk,Lyude/gtk-,chergert/gtk,ahodesuka/gtk,grubersjoe/adwaita,alexlarsson/gtk,bratsche/gtk-,bratsche/gtk-,Lyude/gtk-,Sidnioulz/SandboxGtk,bratsche/gtk-,Distrotech/gtk2,chergert/gtk,Sidnioulz/SandboxGtk,Adamovskiy/gtk,grubersjoe/adwaita,bratsche/gtk-,jadahl/gtk,davidgumberg/gtk,ahodesuka/gtk,jadahl/gtk,davidt/gtk,jigpu/gtk,Adamovskiy/gtk,jigpu/gtk,chergert/gtk,jessevdk/gtk,bratsche/gtk-,ahodesuka/gtk,chergert/gtk,grubersjoe/adwaita,grubersjoe/adwaita,msteinert/gtk,Adamovskiy/gtk,Lyude/gtk-,chergert/gtk,grubersjoe/adwaita,davidt/gtk,ebassi/gtk,Lyude/gtk-,simokivimaki/gtk,Adamovskiy/gtk,jadahl/gtk,Adamovskiy/gtk,ahodesuka/gtk,msteinert/gtk,jadahl/gtk,Lyude/gtk-,ahodesuka/gtk,jessevdk/gtk,davidgumberg/gtk,ahodesuka/gtk,Lyude/gtk-,Distrotech/gtk2,davidgumberg/gtk,ahodesuka/gtk,ebassi/gtk,alexlarsson/gtk,alexlarsson/gtk,davidgumberg/gtk,simokivimaki/gtk,Lyude/gtk-,davidgumberg/gtk,Sidnioulz/SandboxGtk,Adamovskiy/gtk,Distrotech/gtk2,simokivimaki/gtk,alexlarsson/gtk,alexlarsson/gtk,jigpu/gtk,simokivimaki/gtk,Adamovskiy/gtk,jigpu/gtk,jadahl/gtk,grubersjoe/adwaita,davidgumberg/gtk,Sidnioulz/SandboxGtk,jessevdk/gtk,grubersjoe/adwaita,davidt/gtk,jigpu/gtk,jessevdk/gtk,ebassi/gtk,Adamovskiy/gtk,msteinert/gtk,ebassi/gtk,bratsche/gtk-,alexlarsson/gtk,jessevdk/gtk,Distrotech/gtk2,chergert/gtk,jessevdk/gtk,alexlarsson/gtk,msteinert/gtk,davidt/gtk,Distrotech/gtk2,ebassi/gtk,grubersjoe/adwaita,davidt/gtk,simokivimaki/gtk,jigpu/gtk,chergert/gtk,jadahl/gtk,ahodesuka/gtk,jadahl/gtk,Sidnioulz/SandboxGtk,msteinert/gtk