coverity#1228873 Division or modulo by float zero
coverity#1228873 Division or modulo by float zero

Change-Id: Iffd200c6a7028206d91c036cc3a726ad19bd5bc8

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