coverity#1307697 Dereference null return value
coverity#1307697 Dereference null return value

Change-Id: I48bf70689153b83bd1da7ff1553a4a3ec823d1b2

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