do not redeclare nonce variable, otherwise it will not be attached to the url

[chrissachs]

The nonce wasn't attached to the login url, as it was redeclared, which got transpiled to

        var nonce = null;
        if (!this.disableNonceCheck) {
            nonce_1 = this.createAndSaveNonce();
            if (state) {
                state = nonce_1 + this.config.nonceStateSeparator + state;
            }
            else {
                state = nonce_1;
            }
        }

	// ...

        if (nonce && this.oidc) {
            url += '&nonce=' + encodeURIComponent(nonce);
        }

and therefore was never attached to the login url (and in my case was later missing in the identity token, and it couldn't be verified)