message: Add null check for cross-signing info in verification panel
diff: @@ -49,12 +49,12 @@ export default class VerificationPanel extends React.PureComponent {
  Verify by emoji
  </AccessibleButton>;
  - if (request.requestEvent && request.requestEvent.getId()) {
  + const crossSigningInfo = MatrixClientPeg.get().getStoredCrossSigningForUser(request.otherUserId);
  + if (request.requestEvent && request.requestEvent.getId() && crossSigningInfo) {
  const qrCodeKeys = [
  [MatrixClientPeg.get().getDeviceId(), MatrixClientPeg.get().getDeviceEd25519Key()],
  [MatrixClientPeg.get().getCrossSigningId(), MatrixClientPeg.get().getCrossSigningId()],
  ];
  - const crossSigningInfo = MatrixClientPeg.get().getStoredCrossSigningForUser(request.otherUserId);
  const qrCode = <VerificationQRCode
  keyholderUserId={MatrixClientPeg.get().getUserId()}
  requestEventId={request.requestEvent.getId()}
  