coverity#1222226 Division or modulo by zero
coverity#1222226 Division or modulo by zero

Change-Id: I45cbb8dbf2b9e7be6e8dda8603c2ef5f88507d04

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