coverity#705490 Dereference null return value
coverity#705490 Dereference null return value

Change-Id: Iac4178e7f751cba0b4a135dc9d840234d96ccfa2

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