no good reason for these to be static, and likely they will cause
trouble if this code is ever touched from multiple threads at the same
time

Change-Id: I3f29d3795bd1a059a75d0d1ab64b25478fd60121
Reviewed-on: https://gerrit.libreoffice.org/63662
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>