coverity#1187686 Dereference null return value
coverity#1187686 Dereference null return value

Change-Id: Ibbebba7bf421bf7f328a940c7f3d5295c975573c

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