coverity#736864 Dereference before null check
coverity#736864 Dereference before null check

Change-Id: Ia26b4b391de088487e30a2767660ade6c147eeb4

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