svl: convert DBG_ASSERTs in undo.cxx
svl: convert DBG_ASSERTs in undo.cxx

Change-Id: Iecf693181bee7c3ce63dea6c389b03655007a3e5

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