[libdazzle: 3/3] Merge branch 'wip/rishi/task-cache-NULL-value-copy-and-destroy' into 'master'

[Christian Hergert <chergert src gnome org>]

commit 3915b2643c7d25aa9126c0d4f979abe23aef035e
Merge: e9153eb 920908d
Author: Christian Hergert <christian hergert me>
Date:   Tue Mar 30 19:03:29 2021 +0000

    Merge branch 'wip/rishi/task-cache-NULL-value-copy-and-destroy' into 'master'
    
    task-cache: Allow NULL as value_copy_func and value_destroy_func
    
    See merge request GNOME/libdazzle!49

 meson.build                |  2 +-
 src/cache/dzl-task-cache.c |  8 +++++--
 tests/test-task-cache.c    | 53 ++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 60 insertions(+), 3 deletions(-)
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