corrected the error

Change-Id: Iece8f4c440c01eabe108ba4e9a93fe1fb919f0e3
Reviewed-on: https://gerrit.libreoffice.org/43445Reviewed-by: Tamás Zolnai <tamas.zolnai@collabora.com>
Tested-by: Tamás Zolnai <tamas.zolnai@collabora.com>