In some cases there is an endless loop with just two states
switchin one into another. To avoid such freeze now 2 last
states are kept in loop prevention code.

Change-Id: I64fe8aecd5d972eecc9fde3a96d8729960a1998e
Reviewed-on: https://gerrit.libreoffice.org/51996Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Thorsten Behrens <Thorsten.Behrens@CIB.de>