inspector: Fix a thinko
inspector: Fix a thinko

We still need to possibly scan the toplevel after selecting
a widget, since we don't monitor the list of toplevels, so
the window may not be in our tree yet. This was broken in
commit e7bd73f2b0db50c00ef390b756c6597674d7b473.

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