Fix one of the crypto.spec.js failures

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

spec/unit/crypto.spec.js

@@ -11,6 +11,7 @@ import TestClient from '../TestClient';
 import {MatrixEvent} from '../../lib/models/event';
 import Room from '../../lib/models/room';
 import olmlib from '../../lib/crypto/olmlib';
+import {sleep} from "../../src/utils";
 
 const EventEmitter = require("events").EventEmitter;
 
@@ -18,8 +19,6 @@ const sdk = require("../..");
 
 const Olm = global.Olm;
 
-jest.useFakeTimers();
-
 describe("Crypto", function() {
     if (!sdk.CRYPTO_ENABLED) {
         return;
@@ -270,7 +269,8 @@ describe("Crypto", function() {
                 await bobDecryptor.onRoomKeyEvent(ksEvent);
                 await eventPromise;
                 expect(events[0].getContent().msgtype).not.toBe("m.bad.encrypted");
-                // the room key request should be gone since we've now decypted everything
+                await sleep(1);
+                // the room key request should be gone since we've now decrypted everything
                 expect(await cryptoStore.getOutgoingRoomKeyRequest(roomKeyRequestBody))
                     .toBeFalsy();
             },
@@ -301,6 +301,8 @@ describe("Crypto", function() {
         });
 
         it("uses a new txnid for re-requesting keys", async function() {
+            jest.useFakeTimers();
+
             const event = new MatrixEvent({
                 sender: "@bob:example.com",
                 room_id: "!someroom",