coverity#982443 Explicitt null dereferenced
coverity#982443 Explicitt null dereferenced

Change-Id: I470c34c38eda673e6663b23cdb28ea4be0bef914
Reviewed-on: https://gerrit.libreoffice.org/2218
Reviewed-by: Norbert Thiebaud <4a068946920c47769d700757a47cfec2afcce997@gmail.com>
Tested-by: Norbert Thiebaud <4a068946920c47769d700757a47cfec2afcce997@gmail.com>

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core