svx: GetMarkedObjectByIndex() may return nullptr

Seen in this crash:

#6  SdrMarkView::ImpIsFrameHandles() const (this=this@entry=0x7f5a310) at svx/source/svdraw/svdmrkv.cxx:594
#7  0x00007f9779c71058 in SdrMarkView::HasMarkablePoints() const (this=0x7f5a310) at svx/source/svdraw/svdmrkv1.cxx:32
#8  0x00007f9779d0c142 in SdrView::GetContext() const (this=0x7f5a310) at svx/source/svdraw/svdview.cxx:1297
#9  0x00007f976185adf4 in SwWrtShell::GetSelectionType() const (this=this@entry=0x7f32d90) at sw/source/uibase/wrtsh/wrtsh1.cxx:1424
#10 0x00007f9760e3d5b9 in SwCursorShell::sendLOKCursorUpdates() (this=this@entry=0x7f32d90) at sw/source/core/crsr/crsrsh.cxx:2055
#11 0x00007f9760e4046b in SwCursorShell::UpdateCursor(unsigned short, bool) (this=this@entry=0x7f32d90, eFlags=eFlags@entry=6, bIdleEnd=bIdleEnd@entry=false)
at sw/source/core/crsr/crsrsh.cxx:2041
#12 0x00007f9760e41747 in SwCursorShell::EndAction(bool) (this=0x7f32d90, bIdleEnd=bIdleEnd@entry=false) at sw/source/core/crsr/crsrsh.cxx:276
#13 0x00007f976105865a in SwEditShell::EndAllAction() (this=this@entry=0x7e98ed0) at sw/source/core/edit/edws.cxx:102
#14 0x00007f976109f8ed in SwFEShell::DelSelectedObj() (this=0x7e98ed0) at sw/source/core/frmedt/feshview.cxx:2295
#15 0x00007f976184a447 in SwWrtShell::DelRight() (this=this@entry=0x7e98ed0) at sw/source/uibase/wrtsh/delete.cxx:442
#16 0x00007f9761680d6b in SwEditWin::Command(CommandEvent const&) (this=0x7e9ba10, rCEvt=...) at sw/source/uibase/docvw/edtwin.cxx:5483

Change-Id: I916be9ce846c8750acdaf5fc791e1adb3692e002
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/122076
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Tested-by: Jenkins

0 files changed, 0 insertions, 0 deletions