ENGINE_free(h);
static void display_engine_list()	{	ENGINE *h;	int loop;	h = ENGINE_get_first();	loop = 0;	printf("listing available engine types\n");	while(h)		{		printf("engine %i, id = \"%s\", name = \"%s\"\n",			loop++, ENGINE_get_id(h), ENGINE_get_name(h));		h = ENGINE_get_next(h);		}	printf("end of list\n");	}