Fix crash on login

telegram/client.go

@@ -63,7 +63,7 @@ type Client struct {
 }
 
 type clientLocks struct {
-	authorizationReady sync.WaitGroup
+	authorizationReady sync.Mutex
 	chatMessageLocks   map[int64]*sync.Mutex
 	resourcesLock      sync.Mutex
 }

telegram/connect.go

@@ -96,11 +96,14 @@ func (stateHandler *clientAuthorizer) Close() {
 
 // Connect starts TDlib connection
 func (c *Client) Connect(resource string) error {
+	log.Warn("Attempting to connect to Telegram network...")
+
 	// avoid conflict if another authorization is pending already
-	c.locks.authorizationReady.Wait()
+	c.locks.authorizationReady.Lock()
 
 	if c.Online() {
 		c.roster(resource)
+		c.locks.authorizationReady.Unlock()
 		return nil
 	}
 
@@ -116,15 +119,13 @@ func (c *Client) Connect(resource string) error {
 		LastName:        make(chan string, 1),
 	}
 
-	c.locks.authorizationReady.Add(1)
-
 	go c.interactor()
 
 	c.authorizer.TdlibParameters <- c.parameters
 
 	tdlibClient, err := client.NewClient(c.authorizer, c.options...)
 	if err != nil {
-		c.locks.authorizationReady.Done()
+		c.locks.authorizationReady.Unlock()
 		return errors.Wrap(err, "Couldn't initialize a Telegram client instance")
 	}
 
@@ -142,7 +143,7 @@ func (c *Client) Connect(resource string) error {
 
 	go c.updateHandler()
 	c.online = true
-	c.locks.authorizationReady.Done()
+	c.locks.authorizationReady.Unlock()
 	c.addResource(resource)
 
 	go func() {