[gnome-online-accounts] Non-fast-forward update to branch wip/mschraal/goaclient-manager-api-doc

[Debarshi Ray <debarshir src gnome org>]

The branch 'wip/mschraal/goaclient-manager-api-doc' 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:

  7ba7e60... goa: Correct goa_client_get_manager API docs

Commits added to the branch:

  e9f92e4... client: Annotate goa_client_get_manager as returning NULL