message: Handle no selected screen when screen-sharing
diff: @@ -278,6 +278,8 @@ export default class CallView extends React.Component<IProps, IState> {
  if (window.electron?.getDesktopCapturerSources) {
  const { finished } = Modal.createDialog(DesktopCapturerSourcePicker);
  const [source] = await finished;
  + if (!source) return;
  +
  isScreensharing = await this.props.call.setScreensharingEnabled(true, source);
  } else {
  isScreensharing = await this.props.call.setScreensharingEnabled(true);
  