coverity#982764 Dereference null return value
coverity#982764 Dereference null return value

Change-Id: Ib0f01bf529a739e5f92cd41979c18d76d7b545d1

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