124877: method <SwTxtNode::RstTxtAttr(..)> - correct refactoring (made for issue 123389) causing serious endless loop

	cherry-picked from trunk



git-svn-id: https://svn.apache.org/repos/asf/openoffice/branches/AOO410@1603785 13f79535-47bb-0310-9956-ffa450edef68