coverity#705471 Dereference null return value
coverity#705471 Dereference null return value

Change-Id: I7706744e046d0c641300a9d9167d89f00acacd62

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