[gcr] (3 commits) Non-fast-forward update to branch wip/smcv/issue42

[Niels De Graef <nielsdg src gnome org>]

The branch 'wip/smcv/issue42' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  64cdc55... gck-slot: Initialize struct tm to all-zeroes

Commits added to the branch:

  22d0620... gck-slot: Improve assertion checks (*)
  91eeb2e... Merge branch 'wip/smcv/test-gck-slot' into 'master' (*)
  b1c8213... gck-slot: Initialize struct tm to all-zeroes

(*) This commit already existed in another branch; no separate mail sent