coverity#1226487 Dereference null return value
coverity#1226487 Dereference null return value

Change-Id: Icbdf4f4b1739a63aa02260ddc3b29097cb157b63

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