[mutter] Non-fast-forward update to branch wip/halfline/silence-x-io-errors

[Ray Strode <halfline src gnome org>]

The branch 'wip/halfline/silence-x-io-errors' 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:

  90d1682... xwayland: let Xwayland quietly die in peace

Commits added to the branch:

  32da466... xwayland: Don't abort if Xwayland crashes