coverity#982767 Dereference null return value
coverity#982767 Dereference null return value

Change-Id: I4c07d531a081b2011cb1abd35a03038500d889c3

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