update comment

diff --git a/lib/dns/rbtdb.c b/lib/dns/rbtdb.c
index 133b834364b468ff2b2f9e89394464bc4e23652e..210026bd9a31804309f4e0417893c1960aec29a6 100644 (file)
--- a/lib/dns/rbtdb.c
+++ b/lib/dns/rbtdb.c
@@ -15,7 +15,7 @@
  * PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: rbtdb.c,v 1.237 2006/07/24 01:12:45 marka Exp $ */
+/* $Id: rbtdb.c,v 1.238 2006/07/31 02:04:03 marka Exp $ */
 
 /*! \file */
 
@@ -3006,7 +3006,7 @@ cache_zonecut_callback(dns_rbtnode_t *node, dns_name_t *name, void *arg) {
                                        isc_mem_t *mctx;
 
                                        /*
-                                        * header->down can be NULL if the
+                                        * header->down can be non-NULL if the
                                         * refcount has just decremented to 0
                                         * but no_references() has not
                                         * performed clean_cache_node(), in