update the plugin similarly to
    commit 3ee3b36a
    Author: Stephan Bergmann <sbergman@redhat.com>
    Date:   Fri Oct 7 12:05:49 2016 +0200
    loplugin:staticmethods: Don't be fooled by decls starting with macros

Change-Id: I98ac3216d5acf89a49a26feb089ae2fd34e6e510
Reviewed-on: https://gerrit.libreoffice.org/29665Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>