tdf#119648 - even if we fail to import a fontwork, we shouldn't crash.

Change-Id: Id2dcfb69ad8440ea63564334a5a26a5f9b9bde14
Reviewed-on: https://gerrit.libreoffice.org/62789
Tested-by: Jenkins
Reviewed-by: Markus Mohrhard <markus.mohrhard@googlemail.com>
diff --git a/svx/source/toolbars/fontworkbar.cxx b/svx/source/toolbars/fontworkbar.cxx
index 90b0531..290c1f7 100644
--- a/svx/source/toolbars/fontworkbar.cxx
+++ b/svx/source/toolbars/fontworkbar.cxx
@@ -340,7 +340,10 @@

                    if ( GalleryExplorer::GetSdrObj( GALLERY_THEME_POWERPOINT, i, &aFormModel ) )
                    {
                        const SdrObject* pSourceObj = aFormModel.GetPage( 0 )->GetObj( 0 );
                        const SdrObject* pSourceObj = nullptr;
                        if (aFormModel.GetPageCount() > 0)
                            pSourceObj = aFormModel.GetPage( 0 )->GetObj( 0 );
                        SAL_WARN_IF(!pSourceObj, "svx.form", "No content in gallery custom shape '" << rCustomShape << "'" );
                        if( pSourceObj )
                        {
                            PropertyValue aPropVal_;