[gtk: 4/4] Merge branch 'sophie-h/gtk-nullables-2'

[Matthias Clasen <matthiasc src gnome org>]

commit 617d12fd77a0627ece7816123878b04e4dd87cad
Merge: 32a547cc3e 837f398a9b
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Nov 30 23:43:44 2020 -0500

    Merge branch 'sophie-h/gtk-nullables-2'
    
    Merge Sophie's nullable annotations, with some documentation
    fixups on top.

 gtk/gtkcenterlayout.c     | 22 ++++++++++++++--------
 gtk/gtkcolumnview.c       |  2 +-
 gtk/gtkcolumnviewcolumn.c |  5 ++++-
 gtk/gtkcombobox.c         |  6 +++---
 gtk/gtkdragsource.c       |  2 +-
 gtk/gtkheaderbar.c        |  2 +-
 6 files changed, 24 insertions(+), 15 deletions(-)
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