coverity#735842 Explicit null dereferenced
coverity#735842 Explicit null dereferenced

Change-Id: I53112795f301679429afb8da4e01c77e4d2fe820

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