Adapt names: dh -> xxdh

Signed-off-by: Przemek Stekiel <przemyslaw.stekiel@mobica.com>
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 44f2db6..e4d04fb 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -4218,8 +4218,8 @@
 
 #if (defined(PSA_WANT_ALG_ECDH) || defined(PSA_WANT_ALG_FFDH)) && \
     (defined(MBEDTLS_USE_PSA_CRYPTO) || defined(MBEDTLS_SSL_PROTO_TLS1_3))
-    if (handshake->dh_psa_privkey_is_external == 0) {
-        psa_destroy_key(handshake->dh_psa_privkey);
+    if (handshake->xxdh_psa_privkey_is_external == 0) {
+        psa_destroy_key(handshake->xxdh_psa_privkey);
     }
 #endif /* (PSA_WANT_ALG_ECDH || PSA_WANT_ALG_FFDH) &&
           (MBEDTLS_USE_PSA_CRYPTO || MBEDTLS_SSL_PROTO_TLS1_3) */