coverity#705872 Dereference before null check
coverity#705872 Dereference before null check

Change-Id: Ia964362f757372862b3f2e5a0a9581171616251b

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