coverity#1103660 Division or modulo by zero
coverity#1103660 Division or modulo by zero

Change-Id: I468b218635e10e04bb25150b6275e187ba8a8316

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