[tracker] (2 commits) Non-fast-forward update to branch wip/carlosg/bus-fixes

[Carlos Garnacho <carlosg src gnome org>]

The branch 'wip/carlosg/bus-fixes' 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:

  a4172e8... libtracker-sparql/bus: Validate column offsets in bus curso
  5f86964... libtracker-sparql/bus: Check return value of g_dbus_message

Commits added to the branch:

  f1c1c9a... libtracker-sparql/bus: Validate column offsets in bus curso
  772cbf6... libtracker-sparql/bus: Check return value of g_dbus_message