}
void
-tls_free_cert(void * cert)
+tls_free_cert(void ** cert)
{
-gnutls_x509_crt_deinit((gnutls_x509_crt_t) cert);
-gnutls_global_deinit();
+gnutls_x509_crt_t crt = *(gnutls_x509_crt_t *)cert;
+if (crt)
+ {
+ gnutls_x509_crt_deinit(crt);
+ gnutls_global_deinit();
+ *cert = NULL;
+ }
}
/*****************************************************