prevent potential crash if no SystemWindowData is passed
prevent potential crash if no SystemWindowData is passed

Change-Id: I92a084bba88a4c34e93aac9b547a986ea6381790

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