tdf#143515: avoid memory leak in ScDrawLayer::DeleteObjectsInArea

... and in ScDrawLayer::DeleteObjectsInSelection.
We are calling SdrObjList::RemoveObject, which orphans the object.
Let the undo object own the SdrObject, and dispose it when needed.

Was that way ever since d0484bcdcbffd42d242647a2fdc1a203d176b775
"initial import".

Change-Id: I5f2cb9d8ed0e02d45d2699af4a228c7fd097008c
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/119435
Tested-by: Jenkins
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
Signed-off-by: Xisco Fauli <xiscofauli@libreoffice.org>
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/120223
Reviewed-by: Michael Stahl <michael.stahl@allotropia.de>

0 files changed, 0 insertions, 0 deletions