Regression from commit 0fe6f1a1 (use
actual UNO enums in vcl..xmlsecurity, 2017-04-03), it's important when
changing a sal_Int16 to an enum, then arguments of makeAny() calls of
that variable are explicitly casted the previous type to keep
compatibility.

Change-Id: Ib55eeded34033ce536078919c6fad4d571951cd3
Reviewed-on: https://gerrit.libreoffice.org/36358Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
Tested-by: Noel Grandin <noel.grandin@collabora.co.uk>