message: Check whether crypto is enabled in room recovery reminder
  This avoids a soft crash that may occur otherwise.
  Fixes
diff: @@ -1819,6 +1819,7 @@ export default createReactClass({
  );
  const showRoomRecoveryReminder = (
  + this.context.isCryptoEnabled() &&
  SettingsStore.getValue("showRoomRecoveryReminder") &&
  this.context.isRoomEncrypted(this.state.room.roomId) &&
  this.context.getKeyBackupEnabled() === false
  