the string is UTF8 and not Ascii

Change-Id: Ibf9a837ca5689ceae91eff2a081da3b7fe0b9244
Reviewed-on: https://gerrit.libreoffice.org/8094
Reviewed-by: Kohei Yoshida <libreoffice@kohei.us>
Tested-by: Kohei Yoshida <libreoffice@kohei.us>