Don't malloc zero-length uid buffer.

diff --git a/server/mdb.c b/server/mdb.c
index ab131f7b6faf340cc619d8d0960dc6ed20628e17..741fd9bcd1f5eee639478a416a5789bf12345ea7 100644 (file)
--- a/server/mdb.c
+++ b/server/mdb.c
@@ -43,7 +43,7 @@
 
 #ifndef lint
 static char copyright[] =
-"$Id: mdb.c,v 1.61 2001/04/24 00:55:31 mellon Exp $ Copyright (c) 1996-2000 The Internet Software Consortium.  All rights reserved.\n";
+"$Id: mdb.c,v 1.62 2001/04/24 01:02:24 mellon Exp $ Copyright (c) 1996-2000 The Internet Software Consortium.  All rights reserved.\n";
 #endif /* not lint */
 
 #include "dhcpd.h"
@@ -1234,6 +1234,8 @@ int lease_copy (struct lease **lp,
        if (lease -> uid == lease -> uid_buf) {
                lt -> uid = lt -> uid_buf;
                memcpy (lt -> uid_buf, lease -> uid_buf, sizeof lt -> uid_buf);
+       } else if (!lease -> uid_max) {
+               lt -> uid = (unsigned char *)0;
        } else {
                lt -> uid = dmalloc (lt -> uid_max, MDL);
                if (!lt -> uid) {