coverity#735657 Division or modulo by float zero
coverity#735657 Division or modulo by float zero

Change-Id: I001cc2b0c8866956d9fffb67f3a30306f9b02e63

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