coverity#705900 Dereference before null check
coverity#705900 Dereference before null check

Change-Id: I523aa738d4a15395f708aafa9edd266e5717421e

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