Missed one call where the return value must be forwarded.

(regression from 7d481f7a
 and 943d9be7)

Change-Id: Ic405b29a1dce982bfdd81eeb5d678ceb79690bfc
Reviewed-on: https://gerrit.libreoffice.org/70469
Tested-by: Jenkins
Reviewed-by: Michael Stahl <Michael.Stahl@cib.de>