message: fix getDefaultProps mixup
diff: @@ -155,9 +155,11 @@ module.exports = withMatrixClient(React.createClass({
  isTwelveHour: PropTypes.bool,
  },
  - defaultProps: {
  - // no-op function because onWidgetLoad is optional yet some subcomponents assume its existence
  + getDefaultProps: function() {
  + return {
  + // no-op function because onWidgetLoad is optional yet some sub-components assume its existence
  onWidgetLoad: function() {},
  + };
  },
  getInitialState: function() {
  