Here the relevant part of the diff:

  @@ -627,6 +628,7 @@
           goto fail;
       if ((err = SSLHashSHA1.update(&hashCtx, &signedParams)) != 0)
           goto fail;
  +        goto fail;
       if ((err = SSLHashSHA1.final(&hashCtx, &hashOut)) != 0)
           goto fail;