tdf#139500 svx: fix crash on changing table properties during active text edit

Regression from commit fdeb04f7c59cf8032fe17072ed779e70505cc6ab
(tdf#129961 svx: finish UI for table shadow as direct format,
2020-12-15), the problem was that the BegUndo() / EndUndo() pair can be
only used if we know that the text edit of a cell of a table shape is
not started or ended in-between.

The bugreport scenario was an active text edit, where setting attributes
on the shape ends the text edit:

#9 0x7f6dbb417121 in SdrEditView::EndTextEditAllViews() const /svx/source/svdraw/svdedtv.cxx:1079:20
#10 0x7f6dbb466798 in SdrEditView::SetAttrToMarked(SfxItemSet const&, bool) /svx/source/svdraw/svdedtv1.cxx:1095:9
#11 0x7f6dbc34b0af in sdr::table::SvxTableController::SetAttrToSelectedShape(SfxItemSet const&) /svx/source/table/tablecontroller.cxx:2738:12

Which also means that the underlying edit engine is deleted. But then
undo/redo would still reference that edit engine:

==31830==ERROR: AddressSanitizer: heap-use-after-free on address 0x60c0001fc300 at pc 0x7f6dd73a9cb9 bp 0x7fff788db4b0 sp 0x7fff788db4a8
READ of size 8 at 0x60c0001fc300 thread T0
#0 0x7f6dd73a9cb8 in EditUndo::GetComment() const /editeng/source/editeng/editundo.cxx:147:34

Fix the problem by not grouping in case there is an active text edit,
that's not something I considered when I added the original grouping.

Change-Id: I4f3583e21a27f8380c35b3f4563ce496819bcb81
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/115049
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>

0 files changed, 0 insertions, 0 deletions