Resolves: fdo#79129 Crash in oox::drawingml::LayoutNode::setupShape

Change-Id: I0bafd2c43d29806eea0ff0cb165e67aece53488f
(cherry picked from commit c84ce79132c674b4c2d31da8997ed77671323dfe)
Reviewed-on: https://gerrit.libreoffice.org/11727
Reviewed-by: Andras Timar <andras.timar@collabora.com>
Tested-by: Andras Timar <andras.timar@collabora.com>