MSVC 14.0 is failing to link with unresolved external symbol, because
of struct/class mismatch: [1].

* [1] http://paste.openstack.org/show/447780

Change-Id: I67093550d89b323914ae42014d55e89a38adec8c
Reviewed-on: https://gerrit.libreoffice.org/18528Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: David Ostrovsky <david@ostrovsky.org>