tdf#161729 clear style sheets in same order as they were added

std::vector::clear() appears to delete elements in the
reverse order added. In the case of tdf#161729, a style
sheet's SfxItemSet can have a parent SfxItemSet and that
parent is the SfxItemSet for a style sheet added later.

Deleting from the end of the vector deletes a style sheet
and its SfxItemSet. If the now deleted SfxItemSet is a
parent SfxItemSet of a style sheet that was added earlier,
the style sheet added earlier will now have an SfxItemSet
with its parent set to an already deleted pointer. And so
a crash will occur when that earlier style sheet is deleted.
rxStyleSheet.clear();

Change-Id: I8ce7023fce8b01432cb3c9288a8f83e7a2f0f2d8
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/170707
Tested-by: Jenkins
Reviewed-by: Patrick Luby <guibomacdev@gmail.com>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

0 files changed, 0 insertions, 0 deletions