fix incorrect databar length calculation
fix incorrect databar length calculation

Change-Id: I8d6fda8b78daa228fff62f2af8f5f14c7aa03312

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