The idea being that we can improve security by warning for these.

Change-Id: I7d993417bfb6a8fe868bc3e07ccbcfe71bf285ff
Reviewed-on: https://gerrit.libreoffice.org/50387Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Andras Timar <andras.timar@collabora.com>