remove the error return value when receiving TLS extensions

vendor/github.com/marten-seemann/qtls/13.go

@@ -862,16 +862,15 @@ func getCertsFromEntries(certEntries []certificateEntry) [][]byte {
 	return certs
 }
 
-func (hs *clientHandshakeState) processEncryptedExtensions(ee *encryptedExtensionsMsg) error {
+func (hs *clientHandshakeState) processEncryptedExtensions(ee *encryptedExtensionsMsg) {
 	c := hs.c
 	if ee.alpnProtocol != "" {
 		c.clientProtocol = ee.alpnProtocol
 		c.clientProtocolFallback = false
 	}
 	if hs.c.config.ReceivedExtensions != nil {
-		return hs.c.config.ReceivedExtensions(typeEncryptedExtensions, ee.additionalExtensions)
+		hs.c.config.ReceivedExtensions(typeEncryptedExtensions, ee.additionalExtensions)
 	}
-	return nil
 }
 
 func verifyPeerHandshakeSignature(
@@ -1037,9 +1036,7 @@ func (hs *clientHandshakeState) doTLS13Handshake() error {
 		c.sendAlert(alertUnexpectedMessage)
 		return unexpectedMessageError(encryptedExtensions, msg)
 	}
-	if err := hs.processEncryptedExtensions(encryptedExtensions); err != nil {
-		return err
-	}
+	hs.processEncryptedExtensions(encryptedExtensions)
 	hs.keySchedule.write(encryptedExtensions.marshal())
 
 	// PSKs are not supported, so receive Certificate message.

vendor/github.com/marten-seemann/qtls/common.go

@@ -631,7 +631,7 @@ type Config struct {
 	// Currently only implemented for the ClientHello message (sent by the
 	// client) and for the EncryptedExtensions message (sent by the server).
 	// Only valid for TLS 1.3.
-	ReceivedExtensions func(handshakeMessageType uint8, exts []Extension) error
+	ReceivedExtensions func(handshakeMessageType uint8, exts []Extension)
 
 	serverInitOnce sync.Once // guards calling (*Config).serverInit
 

vendor/github.com/marten-seemann/qtls/handshake_server.go

@@ -261,10 +261,7 @@ Curves:
 		hs.hello.compressionMethod = compressionNone
 	} else {
 		if hs.c.config.ReceivedExtensions != nil {
-			if err := hs.c.config.ReceivedExtensions(typeClientHello, hs.clientHello.additionalExtensions); err != nil {
-				c.sendAlert(alertInternalError)
-				return false, err
-			}
+			hs.c.config.ReceivedExtensions(typeClientHello, hs.clientHello.additionalExtensions)
 		}
 		hs.hello = new(serverHelloMsg)
 		hs.hello13Enc = new(encryptedExtensionsMsg)