tdf#151866 sw: layout: prevent deleting newly created SwSectionFrame

A section frame is created so that content can move back from another
page into it.

Apparently only the pPrv frame is on the same page, and formatting it in
SwFrame::MakePos() moves it backward, then CheckPageDescs() sees a page
with only empty section frames on it and deletes the whole page.

(regression from commit b9ef71476fd70bc13f50ebe80390e0730d1b7afb)

Change-Id: I4f8e4debd4bcf993c9355dcfc3ced779fe6732ff
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/155467
Tested-by: Jenkins
Reviewed-by: Michael Stahl <michael.stahl@allotropia.de>

0 files changed, 0 insertions, 0 deletions