Fixed encoding of TLS extensions (elliptic_curves and signature_algorithms)

src/libtls/tls_crypto.c

@@ -1110,6 +1110,7 @@ METHOD(tls_crypto_t, get_signature_algorithms, void,
 	}
 	enumerator->destroy(enumerator);
 
+	supported->wrap16(supported);
 	writer->write_data16(writer, supported->get_buf(supported));
 	supported->destroy(supported);
 }

src/libtls/tls_peer.c

@@ -760,6 +760,7 @@ static status_t send_client_hello(private_tls_peer_t *this,
 	enumerator->destroy(enumerator);
 	if (curves)
 	{
+		curves->wrap16(curves);
 		extensions->write_data16(extensions, curves->get_buf(curves));
 		curves->destroy(curves);