changing fields in account is done and upd chats retrieval

stubs/api/auth/index.js

@@ -34,11 +34,13 @@ authRouter.post('/login', (req, res) => {
     // Invalid identification
     if (!user) {
         res.status(401).send({message: 'Invalid credentials (id)'});
+        return;
     }
 
     // Invalid authentication
     if (!password || password !== user.password) {
         res.status(401).send({message: 'Invalid credentials (password)'});
+        return;
     }
 
     // Now, authorization
@@ -59,10 +61,12 @@ authRouter.post('/reg', (req, res) => {
     // Invalid identification
     if (user) {
         res.status(409).send({message: 'Such id already exists'});
+        return;
     }
 
     if (!name || !password || !nickname) {
         res.status(401).send({message: 'Empty or invalid fields'});
+        return;
     }
 
     // Add to 'DB'

stubs/api/change/index.js

@@ -16,6 +16,7 @@ changeRouter.post('/nickname', (req, res) => {
     // Invalid identification
     if (!user) {
         res.status(401).send({message: 'Invalid credentials (id)'});
+        return;
     }
 
     const updatedUser = {
@@ -42,6 +43,7 @@ changeRouter.post('/password', (req, res) => {
     // Invalid identification
     if (!user) {
         res.status(401).send({message: 'Invalid credentials (id)'});
+        return;
     }
 
     // Delete the old one