This addresses some cppcheck warnings.

Change-Id: I800242bbac3092d2dbaa9098fc6355fe675872e1
Reviewed-on: https://gerrit.libreoffice.org/13906Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>