coverity#1242481 Dereference null return value
coverity#1242481 Dereference null return value

Change-Id: I21e6bdd643d898a3515a96e4c9c17c2d6f98b0e4

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