message: Explain why search results are cleared when eventId changes
diff: @@ -170,6 +170,8 @@ module.exports = React.createClass({
  isEventHighlighted: RoomViewStore.isEventHighlighted(),
  };
  + // Clear the search results when clicking a search result (which changes the
  + // currently scrolled to event, this.state.eventId).
  if (this.state.eventId !== newState.eventId) {
  newState.searchResults = null;
  }
  