coverity#1202783 Division or modulo by zero
coverity#1202783 Division or modulo by zero

Change-Id: Ida169195697d3976500a16e3cced40b25664a02e

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