coverity#736854 Dereference before null check
coverity#736854 Dereference before null check

Change-Id: I123887938735eb14e8ad4450f6d01b3b352f1b5e

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