Remove redundant sal_Char *

Change-Id: I82c80134edaf34f1392d06b0bb68ff092652524b
Reviewed-on: https://gerrit.libreoffice.org/10634
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Miklos Vajna <vmiklos@collabora.co.uk>