From 8eef7a4275eda8f2fa2e0d1e67c1d5cbcd91607e Mon Sep 17 00:00:00 2001
From: Howard Chu <hyc@symas.com>
Date: Thu, 4 Apr 2013 07:25:21 -0700
Subject: [PATCH] Fix 6beaad52129da5353fd40c0ec48e6a78c4f71a2e

In APPEND don't immediately reject matching key, since this
is valid for APPENDDUP.
---
 libraries/liblmdb/mdb.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libraries/liblmdb/mdb.c b/libraries/liblmdb/mdb.c
index 513706d..4b79e15 100644
--- a/libraries/liblmdb/mdb.c
+++ b/libraries/liblmdb/mdb.c
@@ -4938,8 +4938,8 @@ mdb_cursor_put(MDB_cursor *mc, MDB_val *key, MDB_val *data,
 				if (rc > 0) {
 					rc = MDB_NOTFOUND;
 					mc->mc_ki[mc->mc_top]++;
-				} else {
-					/* new key is <= last key */
+				} else if (rc < 0) {
+					/* new key is < last key */
 					rc = MDB_KEYEXIST;
 				}
 			}