coverity#705522 Dereference null return value
coverity#705522 Dereference null return value

Change-Id: Icf9e49d12b593c590287be9952dfe8d722613a86

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