coverity#440519 Dereference before null check
coverity#440519 Dereference before null check

Change-Id: I78cfe1a807e59d63dc22fbec8bcadfa7596d5a96

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