ossl_quic_set_diag_title
int ossl_quic_set_diag_title(SSL_CTX *ctx, const char *title);
if (!TEST_true(ossl_quic_set_diag_title(h->c_ctx, title)))
if (!TEST_true(ossl_quic_set_diag_title(ctx, "quic_radix_test")))