fix assert on exporting fdo79938-1.ott to .doc
fix assert on exporting fdo79938-1.ott to .doc

Change-Id: I93f331bd1c57bd016948e3ed784530724a1028b4

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