initialize only a fully available hash

diff --git a/lib/gnutls_hash_int.c b/lib/gnutls_hash_int.c
index a6f781a4dc6419d18f4167b3668982ebba4c8e8c..b316ece0f832fbbdb43cd5bc448aee37028f0f2a 100644 (file)
--- a/lib/gnutls_hash_int.c
+++ b/lib/gnutls_hash_int.c
@@ -68,7 +68,7 @@ _gnutls_hash_init (digest_hd_st * dig, gnutls_digest_algorithm_t algorithm)
   /* check if a digest has been registered 
    */
   cc = _gnutls_get_crypto_digest (algorithm);
-  if (cc != NULL)
+  if (cc != NULL && cc->init)
     {
       if (cc->init (algorithm, &dig->handle) < 0)
         {