coverity#440706 : Explicit null dereferenced
coverity#440706 : Explicit null dereferenced

Change-Id: I9c078ba5cb413bdb1c790adc327796a85d870974

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