coverity#705871 Dereference before null check
coverity#705871 Dereference before null check

Change-Id: I5e52347ce5cee26dffb4d47fc8d320567a0fea31

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