[gtk/gtk-3-24: 3/3] Merge branch 'issue2780' into 'gtk-3-24'

[Matthias Clasen <matthiasc src gnome org>]

commit c4c00461fe39d215fbd8d78efd2a9f89bbd7d888
Merge: 88e8a5272e 33059211f4
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Sep 30 15:05:52 2020 +0000

    Merge branch 'issue2780' into 'gtk-3-24'
    
    cssnode: Bail out nicely if there is no settings
    
    See merge request GNOME/gtk!2646

 gtk/gtkcssnode.c       | 7 ++++++-
 gtk/gtkcsswidgetnode.c | 5 +++++
 gtk/gtksettings.c      | 3 ++-
 3 files changed, 13 insertions(+), 2 deletions(-)
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