listbox: check gsequence end iter in get_row_at_index
listbox: check gsequence end iter in get_row_at_index

alexlarsson/gtk,ahodesuka/gtk,jessevdk/gtk,Sidnioulz/SandboxGtk,Lyude/gtk-,davidgumberg/gtk,alexlarsson/gtk,ahodesuka/gtk,Adamovskiy/gtk,Adamovskiy/gtk,jessevdk/gtk,alexlarsson/gtk,jessevdk/gtk,Lyude/gtk-,chergert/gtk,davidgumberg/gtk,Lyude/gtk-,Lyude/gtk-,Sidnioulz/SandboxGtk,chergert/gtk,ahodesuka/gtk,grubersjoe/adwaita,Sidnioulz/SandboxGtk,jigpu/gtk,davidgumberg/gtk,jigpu/gtk,Adamovskiy/gtk,chergert/gtk,grubersjoe/adwaita,Lyude/gtk-,davidgumberg/gtk,ahodesuka/gtk,Sidnioulz/SandboxGtk,alexlarsson/gtk,jigpu/gtk,Adamovskiy/gtk,davidgumberg/gtk,alexlarsson/gtk,Adamovskiy/gtk,jadahl/gtk,Adamovskiy/gtk,alexlarsson/gtk,grubersjoe/adwaita,alexlarsson/gtk,jadahl/gtk,grubersjoe/adwaita,Lyude/gtk-,jigpu/gtk,ahodesuka/gtk,grubersjoe/adwaita,jadahl/gtk,grubersjoe/adwaita,jadahl/gtk,jigpu/gtk,ahodesuka/gtk,Adamovskiy/gtk,jadahl/gtk,Sidnioulz/SandboxGtk,ahodesuka/gtk,Lyude/gtk-,davidgumberg/gtk,jessevdk/gtk,alexlarsson/gtk,davidgumberg/gtk,Sidnioulz/SandboxGtk,Adamovskiy/gtk,grubersjoe/adwaita,chergert/gtk,Lyude/gtk-,chergert/gtk,jadahl/gtk,jessevdk/gtk,jessevdk/gtk,grubersjoe/adwaita,jigpu/gtk,chergert/gtk,jigpu/gtk,davidgumberg/gtk,chergert/gtk,jessevdk/gtk,chergert/gtk,jadahl/gtk,jadahl/gtk,jigpu/gtk,ahodesuka/gtk