check for uncommited work before executing a nextchange
check for uncommited work before executing a nextchange

Change-Id: I12b03bb778da712cfe48543949d9634be5221419

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