From fbdd452799b87f40709a48bb316d1df2735f4c9b Mon Sep 17 00:00:00 2001
From: Howard Chu <hyc@openldap.org>
Date: Sat, 9 Sep 2017 15:08:03 +0100
Subject: [PATCH] ITS#8728 fix MDB_VL32 freeing overflow page

---
 libraries/liblmdb/mdb.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libraries/liblmdb/mdb.c b/libraries/liblmdb/mdb.c
index a483e83..cdf1991 100644
--- a/libraries/liblmdb/mdb.c
+++ b/libraries/liblmdb/mdb.c
@@ -6518,6 +6518,10 @@ release:
 		if (rc)
 			return rc;
 	}
+#ifdef MDB_VL32
+	if (mc->mc_ovpg == mp)
+		mc->mc_ovpg = NULL;
+#endif
 	mc->mc_db->md_overflow_pages -= ovpages;
 	return 0;
 }