Merge pull request #87 from roman-khimov/lint

Linter fixes

api/auth/center.go

@@ -44,6 +44,7 @@ type (
 	prs int
 )
 
+// ErrNoAuthorizationHeader is returned for unauthenticated requests.
 var ErrNoAuthorizationHeader = errors.New("no authorization header")
 
 func (p prs) Read(_ []byte) (n int, err error) {

cmd/s3-gw/app-settings.go

@@ -28,9 +28,6 @@ const (
 	defaultConnectTimeout  = 30 * time.Second
 	defaultShutdownTimeout = 15 * time.Second
 
-	defaultKeepaliveTime    = 10 * time.Second
-	defaultKeepaliveTimeout = 10 * time.Second
-
 	defaultMaxClientsCount    = 100
 	defaultMaxClientsDeadline = time.Second * 30
 )