(cached_conf_exists): Mention a possible way to speed up this.

src/server/simple-cache.c

 /*
- * $Id: simple-cache.c,v 0.69 1998/10/11 17:19:10 ceder Exp $
+ * $Id: simple-cache.c,v 0.70 1998/12/20 19:50:16 ceder Exp $
  * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996  Lysator Academic Computer Association.
  *
  * This file is part of the LysKOM server.
@@ -35,7 +35,7 @@
  */
 
 static const char *
-rcsid = "$Id: simple-cache.c,v 0.69 1998/10/11 17:19:10 ceder Exp $";
+rcsid = "$Id: simple-cache.c,v 0.70 1998/12/20 19:50:16 ceder Exp $";
 #include "rcs.h"
 USE(rcsid);
 
@@ -853,6 +853,11 @@ cached_conf_exists(Conf_no conf_no)
     if (conf_no == 0 || conf_no >= next_free_num )
 	return FALSE;
 
+    /* FIXME: it is probably faster to use
+       return small_conf_arr[conf_no] != NULL ? TRUE : FALSE
+       but that requires changes to cached_delete_conf.
+     */
+
     node = get_conf_node (conf_no);
 
     if (node != NULL && node->s.exists != 0)