Do not enforce a minimum of expander_size in gtk_tree_view_get_row_height
Do not enforce a minimum of expander_size in gtk_tree_view_get_row_height

Instead this is now enforced in gtk_tree_view_get_cell_area_height().
There are rows for which a height in between 0 and expander_size is
allowed, for example separator rows.

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