tdf#147006 sw_fieldmarkhide: fix crash when deleting fly with fieldmark

The problem is similar to commit eef10be20a4c5108c68b19ccdda263c5ca852386,
there is a fieldmark in a fly and this results in
UpdateFramesForRemoveDeleteRedline() re-creating fly frames that have
already been deleted in SwUndoFlyBase::DelFly(), and then the
SwFlyAtContentFrame::SwClientNotify() crashes on a null anchor position
in the SwFormat::ResetFormatAttr(RES_ANCHOR).

This time the passed rPam is empty, after removing the dummy characters
of the fieldmark; there isn't really anything to do in this case so
just return.

Change-Id: I475b8fcb0bcf94be58ff553454c261d75076303b
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/129308
Tested-by: Jenkins
Reviewed-by: Michael Stahl <michael.stahl@allotropia.de>
(cherry picked from commit bdf1d9b8151476531f2fbe06f66db260efcbc529)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/129266
Tested-by: Xisco Fauli <xiscofauli@libreoffice.org>
Reviewed-by: Xisco Fauli <xiscofauli@libreoffice.org>

0 files changed, 0 insertions, 0 deletions