applied in Show Changes mode, instead of losing them after
saving the document or hiding the changes.

The bug occurred in paragraphs with directly preceding tracked deletions.

Change-Id: I25a84aec0159f809dd7b67d4e530e87b01070f44
Reviewed-on: https://gerrit.libreoffice.org/66800Reviewed-by: László Németh <nemeth@numbertext.org>
Tested-by: László Németh <nemeth@numbertext.org>