coverity#735616 Division or modulo by float zero
coverity#735616 Division or modulo by float zero

Change-Id: I5aaad2cd80e6930cbca57b4df2bfee3a6989ca41

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