oox: fix export of LineShapes in DOCX
oox: fix export of LineShapes in DOCX

Change-Id: I7b6f4616d450d2cffa58217db2ef250f5b8d9cba

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