From e31d748dbe16b326fb2e80c1b876814cf7b24f45 Mon Sep 17 00:00:00 2001
From: Howard Chu <hyc@symas.com>
Date: Mon, 1 Apr 2013 20:34:40 -0700
Subject: [PATCH] Fix rebalance when collapsing root page

When fixing other cursors, must also fix their depth.
---
 libraries/liblmdb/mdb.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libraries/liblmdb/mdb.c b/libraries/liblmdb/mdb.c
index 28f3452..2d06f3b 100644
--- a/libraries/liblmdb/mdb.c
+++ b/libraries/liblmdb/mdb.c
@@ -6341,6 +6341,8 @@ mdb_rebalance(MDB_cursor *mc)
 					if (m3->mc_snum < mc->mc_snum) continue;
 					if (m3->mc_pg[0] == mp) {
 						m3->mc_pg[0] = mc->mc_pg[0];
+						m3->mc_snum = 1;
+						m3->mc_top = 0;
 					}
 				}
 			}