avoid use after free in error paths

ok miod@ martijn@

diff --git a/usr.sbin/ldapd/schema.c b/usr.sbin/ldapd/schema.c
index 2635960..9d5ec99 100644 (file)
--- a/usr.sbin/ldapd/schema.c
+++ b/usr.sbin/ldapd/schema.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: schema.c,v 1.19 2019/10/24 12:39:26 tb Exp $ */
+/*     $OpenBSD: schema.c,v 1.20 2022/10/12 11:57:40 jsg Exp $ */
 
 /*
  * Copyright (c) 2010 Martin Hedenfalk <martinh@openbsd.org>
@@ -834,6 +834,7 @@ schema_parse_attributetype(struct schema *schema)
                        goto fail;
                }
                free(kw);
+               kw = NULL;
        }
 
        /* Check that a syntax is defined, either directly or
@@ -972,6 +973,7 @@ schema_parse_objectclass(struct schema *schema)
                        goto fail;
                }
                free(kw);
+               kw = NULL;
        }
 
        /* Verify the subclassing is allowed.