load gost algorithm if digest is seen before key algorithm

src/util/val_secalgo.c

@@ -88,6 +88,7 @@ _getdns_ds_digest_size_supported(int algo)
 #endif
 #ifdef USE_GOST
 		case GLDNS_HASH_GOST:
+			(void) gldns_key_EVP_load_gost_id();
 			if(EVP_get_digestbyname("md_gost94"))
 				return 32;
 			else	return 0;