message: fixup for roomsublist fix
diff: @@ -164,7 +164,12 @@ module.exports = React.createClass({
  // load stored sizes
  Object.entries(this.subListSizes).forEach(([id, size]) => {
  - this.resizer.forHandleWithId(id).resize(size);
  + const handle = this.resizer.forHandleWithId(id);
  + if (handle) {
  + try {
  + handle.resize(size);
  + } catch(_e) {}
  + }
  });
  this.resizer.attach();
  