Fix linter errors

Gofumpt twcc and add back start := start to avoid using range variable
in function literal (copies start instead).

AUTHORS.txt

@@ -8,6 +8,7 @@ adamroach <[email protected]>
 aler9 <[email protected]>
 Antoine Baché <[email protected]>
 Atsushi Watanabe <[email protected]>
+boks1971 <[email protected]>
 Jonathan Müller <[email protected]>
 Mathis Engelbart <[email protected]>
 Sean DuBois <[email protected]>

pkg/nack/receive_log_test.go

@@ -8,6 +8,8 @@ import (
 
 func TestReceivedBuffer(t *testing.T) {
 	for _, start := range []uint16{0, 1, 127, 128, 129, 511, 512, 513, 32767, 32768, 32769, 65407, 65408, 65409, 65534, 65535} {
+		start := start
+
 		t.Run(fmt.Sprintf("StartFrom%d", start), func(t *testing.T) {
 			rl, err := newReceiveLog(128)
 			if err != nil {

pkg/twcc/header_extension_interceptor.go

@@ -8,8 +8,7 @@ import (
 )
 
 // HeaderExtensionInterceptorFactory is a interceptor.Factory for a HeaderExtensionInterceptor
-type HeaderExtensionInterceptorFactory struct {
-}
+type HeaderExtensionInterceptorFactory struct{}
 
 // NewInterceptor constructs a new HeaderExtensionInterceptor
 func (h *HeaderExtensionInterceptorFactory) NewInterceptor(id string) (interceptor.Interceptor, error) {