ofz: check if fallback creation fails

Change-Id: If64965f8ced5840a7687c60f20a407e53938c227
Reviewed-on: https://gerrit.libreoffice.org/42371Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

sw/source/core/ole/ndole.cxx

@@ -906,7 +906,7 @@ const uno::Reference < embed::XEmbeddedObject > SwOLEObj::GetOleRef()
             OUString aTmpName;
             xObj = p->GetEmbeddedObjectContainer().CreateEmbeddedObject( SvGlobalName( SO3_DUMMY_CLASSID ).GetByteSequence(), aTmpName );
         }
-        // else
+        if (xObj.is())
         {
             m_xOLERef.Assign( xObj, m_xOLERef.GetViewAspect() );
             m_xOLERef.AssignToContainer( &p->GetEmbeddedObjectContainer(), m_aName );