filechooser: When stopping/clearing BROWSE model, really ensure that we end up in LOAD_EMPTY state
filechooser: When stopping/clearing BROWSE model, really ensure that we end up in LOAD_EMPTY state

Previously we could end up in a situation where browse_list_model==NULL, and yet load_state==LOAD_FINISHED.
This is not a valid state.  So, when we get rid of the list model, really ensure that we end up
in LOAD_EMPTY so nothing assumes that there is a valid list model around.

Signed-off-by: Federico Mena Quintero <4999915a961edfd7686112c2935288e1266eae14@gnome.org>

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