tdf#46561 sw: fix lost undo stack setting header/footer

Changing 'shared' setting of left vs right or
first vs non-first page headers or footers removed
the whole undo stack.

Note: style changes before a 'shared' change
can still not be undone.

Co-authored-by: Attila Bakos (NISZ)

Change-Id: I6875bd0581869ffeb853911347dbc9f8c666214b
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/111635
Reviewed-by: László Németh <nemeth@numbertext.org>
Reviewed-by: Balazs Varga <varga.balazs3@nisz.hu>
Tested-by: Balazs Varga <varga.balazs3@nisz.hu>

0 files changed, 0 insertions, 0 deletions