fix: explicity end auth middleware

see stegano/next-http-proxy-middleware#21

src/pages/api/auth/login.ts

@@ -14,6 +14,7 @@ export default async function login(req: NextApiRequest, res: NextApiResponse) {
             user: { ...session?.user, name: 'John Doe' },
         });
         await handleLogin(req, res);
+        res.end();
     } catch (error) {
         if (error instanceof LoginHandlerError) {
             res.status(error.status ?? 400).end(error.message);

src/pages/api/auth/logout.ts

@@ -4,6 +4,7 @@ import { NextApiRequest, NextApiResponse } from 'next';
 export default async function login(req: NextApiRequest, res: NextApiResponse) {
     try {
         await handleLogout(req, res);
+        res.end();
     } catch (error) {
         if (error instanceof LogoutHandlerError) {
             res.status(error.status ?? 400).end(error.message);

src/pages/api/auth/me.ts

@@ -7,6 +7,7 @@ export default async function callback(
 ) {
     try {
         await handleProfile(req, res);
+        res.end();
     } catch (error) {
         if (error instanceof ProfileHandlerError) {
             res.status(error.status ?? 400).end(error.message);