coverity#440711 Explicit null dereferenced
coverity#440711 Explicit null dereferenced

Change-Id: I794ac29dc81b1d42b959135277284de1f8c33ccf

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