coverity#1302687 Dereference null return value
coverity#1302687 Dereference null return value

Change-Id: I65e09944bdfa0ccc0aa2b0e6bf423ab943c642f8

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