coverity#1242427 Explicit null dereferenced
coverity#1242427 Explicit null dereferenced

Change-Id: I768b9596432b95e0152011951bf366eb41da6b53

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