coverity: prevent acces to unintialized variable
coverity: prevent acces to unintialized variable

Change-Id: Ic2c28232574460fd59dd404618af6b581f410a83

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