coverity#735639 Division or modulo by float zero
coverity#735639 Division or modulo by float zero

Change-Id: I2ba45c49fb00fdd53b8e388e25df503e82c2332e

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