Use g_format_size() instead of g_format_size_for_display()
Use g_format_size() instead of g_format_size_for_display()

We do this like in commit 4ead7b69ea0, so that apps which use the gtk2 file chooser
will show the same file sizes as gtk3 apps.

Unity-Technologies/gtk,johne53/MB3Gtk-2,johne53/MB3Gtk-2,johne53/MB3Gtk-2,Unity-Technologies/gtk,Distrotech/gtk,johne53/MB3Gtk-2,Unity-Technologies/gtk,Distrotech/gtk,Distrotech/gtk,Unity-Technologies/gtk,Unity-Technologies/gtk,Distrotech/gtk,johne53/MB3Gtk-2,Distrotech/gtk