Style: format code by gofumpt (#1022)

proxy/vmess/encoding/auth.go

@@ -38,8 +38,7 @@ func (NoOpAuthenticator) Open(dst, nonce, ciphertext, additionalData []byte) ([]
 }
 
 // FnvAuthenticator is an AEAD based on Fnv hash.
-type FnvAuthenticator struct {
-}
+type FnvAuthenticator struct{}
 
 // NonceSize implements AEAD.NonceSize().
 func (*FnvAuthenticator) NonceSize() int {

proxy/vmess/encoding/commands.go

@@ -77,8 +77,7 @@ type CommandFactory interface {
 	Unmarshal(data []byte) (interface{}, error)
 }
 
-type CommandSwitchAccountFactory struct {
-}
+type CommandSwitchAccountFactory struct{}
 
 func (f *CommandSwitchAccountFactory) Marshal(command interface{}, writer io.Writer) error {
 	cmd, ok := command.(*protocol.CommandSwitchAccount)