coverity#735793 Explicit null dereferenced
coverity#735793 Explicit null dereferenced

Change-Id: If2c4821466783908a6ac2bec3dc7a913e744fccb

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