Merge pull request #4873 from matrix-org/jryans/room-view-crypto-crash

Check whether crypto is enabled in room recovery reminder

src/components/structures/MatrixChat.tsx

@@ -23,7 +23,6 @@ import * as Matrix from "matrix-js-sdk";
 import { InvalidStoreError } from "matrix-js-sdk/src/errors";
 import { RoomMember } from "matrix-js-sdk/src/models/room-member";
 import { MatrixEvent } from "matrix-js-sdk/src/models/event";
-import { isCryptoAvailable } from 'matrix-js-sdk/src/crypto';
 // focus-visible is a Polyfill for the :focus-visible CSS pseudo-attribute used by _AccessibleButton.scss
 import 'focus-visible';
 // what-input helps improve keyboard accessibility

src/components/structures/RoomView.js

@@ -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