This addresses some cppcheck warnings.

Change-Id: I97726ed32e5aa92e7da7d248380a78b1b201e46e
Reviewed-on: https://gerrit.libreoffice.org/17912Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Thorsten Behrens <Thorsten.Behrens@CIB.de>