[gtk: 3/3] Merge branch 'matthiasc/for-master' into 'master'

[Matthias Clasen <matthiasc src gnome org>]

commit 1536f6a59c747fbc4f89cd263d22d1399d01807e
Merge: 574b0bf48a eaf09a4625
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Mar 18 21:43:14 2021 +0000

    Merge branch 'matthiasc/for-master' into 'master'
    
    inspector: Respect GDK_DEBUG=vulkan-disable
    
    Closes #3748
    
    See merge request GNOME/gtk!3312

 gtk/gtkimage.c          |  4 +---
 gtk/gtklabel.c          |  6 ++----
 gtk/inspector/general.c | 21 ++++++++++++++++++++-
 3 files changed, 23 insertions(+), 8 deletions(-)
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