fix linter issue

Author: asmyasnikov

internal/conn/pool.go

@@ -140,9 +140,9 @@ func (p *Pool) Release(ctx context.Context) error {
 
 	var (
 		errCh = make(chan error, len(conns))
-		wg      sync.WaitGroup
+		wg    sync.WaitGroup
 	)
-	
+
 	wg.Add(len(conns))
 	for _, c := range conns {
 		go func(c closer.Closer) {