V758 The 'aModel' reference becomes invalid when smart pointer returned by a function is destroyed. Change-Id: If06b81fda6fdaf4debf5061dd0e3c6c7caccad5a Reviewed-on: https://gerrit.libreoffice.org/c/core/+/176742 Tested-by: Jenkins Reviewed-by: Xisco Fauli <xiscofauli@libreoffice.org>