Regression from the commit 740b9978
"tdf#120413 LibreLogo: handle complex Logo expressions".

Change-Id: Iaae54efacf86a03a6611c154a40068ed058d43e7
Reviewed-on: https://gerrit.libreoffice.org/69138
Tested-by: Jenkins
Reviewed-by: László Németh <nemeth@numbertext.org>