message: Handle stickerpack close.
diff: @@ -28,6 +28,7 @@ export default class Stickerpack extends React.Component {
  super(props);
  this.onShowStickersClick = this.onShowStickersClick.bind(this);
  this.onHideStickersClick = this.onHideStickersClick.bind(this);
  + this.onFinished = this.onFinished.bind(this);
  this.defaultStickersContent = (
  <div className='mx_StickersContentPlaceholder'>
  @@ -100,6 +101,7 @@ export default class Stickerpack extends React.Component {
  menuWidth: this.popoverWidth,
  menuHeight: this.popoverHeight,
  element: this.state.stickersContent,
  + onFinished: this.onFinished,
  });
  @@ -110,6 +112,10 @@ export default class Stickerpack extends React.Component {
  this.setState({showStickers: false});
  }
  + onFinished() {
  + this.setState({showStickers: false});
  + }
  +
  render() {
  const TintableSvg = sdk.getComponent("elements.TintableSvg");
  let stickersButton;
  