message: Fix typo in tabIndex to make React happy
diff: @@ -780,7 +780,7 @@ export default createReactClass({
  aria-label={_t("Rooms")}
  // Firefox sometimes makes this element focusable due to
  // overflow:scroll;, so force it out of tab order.
  - tabindex="-1"
  + tabIndex="-1"
  onMouseMove={this.onMouseMove}
  onMouseLeave={this.onMouseLeave}
  >
  