Update submodules: parser (new commits)

parser:
    53058f9 Shane Mc Cormack <shane@dmdirc.com>
            Add missing null check to OutputQueue when changing the enabled state of the queue.

            Gerrit: http://gerrit.dmdirc.com/2839

Change-Id: Id6affc978eb80bcc2f6eea04eac7eeef55856061