Merge pull request matrix-org#3567 from matrix-org/t3chguy/room_create_ELS_use_profile

Fix Room Create ELS using MXID instead of newly set Displayname/Avatar

Author: t3chguy

src/components/structures/MessagePanel.js

@@ -443,15 +443,17 @@ module.exports = createReactClass({
  // one was itself. This way, the timestamp of the previous event === the
  // timestamp of the current event, and no DateSeparator is inserted.
  return this._getTilesForEvent(e, e, e === lastShownEvent);
- }).reduce((a, b) => a.concat(b));
+ }).reduce((a, b) => a.concat(b), []);
 
+ // Get sender profile from the latest event in the summary as the m.room.create doesn't contain one
+ const ev = this.props.events[i];
  ret.push(<EventListSummary
  key="roomcreationsummary"
  events={summarisedEvents}
  onToggle={this._onHeightChanged} // Update scroll state
- summaryMembers={[mxEv.sender]}
+ summaryMembers={[ev.sender]}
  summaryText={_t("%(creator)s created and configured the room.", {
- creator: mxEv.sender ? mxEv.sender.name : mxEv.getSender(),
+ creator: ev.sender ? ev.sender.name : ev.getSender(),
  })}
  >
  { eventTiles }
@@ -529,7 +531,7 @@ module.exports = createReactClass({
  // one was itself. This way, the timestamp of the previous event === the
  // timestamp of the current event, and no DateSeparator is inserted.
  return this._getTilesForEvent(e, e, e === lastShownEvent);
- }).reduce((a, b) => a.concat(b));
+ }).reduce((a, b) => a.concat(b), []);
 
  if (eventTiles.length === 0) {
  eventTiles = null;