Temporary fix to make separator rows request enough space for the expander size.
Temporary fix to make separator rows request enough space for the expander size.

This fix is incorrect, treeviews dont rely on the expander size for drawing
separator rows (added XXX comment in line), need to fix this somewhere else

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