applied in Show Changes mode, instead of losing them
after saving the document or hiding the changes. The bug
occured in paragraphs with directly preceding tracked deletions.

Change-Id: I9a5fd1b82cb7e99884d8807d0abee1fea59d5df3
Reviewed-on: https://gerrit.libreoffice.org/64518Reviewed-by: László Németh <nemeth@numbertext.org>
Tested-by: László Németh <nemeth@numbertext.org>