From a9244f807bb18e8fd4e2e20bb78c4fe85caefd10 Mon Sep 17 00:00:00 2001
From: Leonid Yuriev <leo@yuriev.ru>
Date: Fri, 24 Aug 2018 04:04:24 +0300
Subject: [PATCH] mdbx: backport - setup mdbx_cmp_memn() as data-comparator for
 safety.

---
 src/mdbx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mdbx.c b/src/mdbx.c
index ea2c6619..ac9ef367 100644
--- a/src/mdbx.c
+++ b/src/mdbx.c
@@ -10768,7 +10768,7 @@ static MDBX_cmp_func *mdbx_default_keycmp(unsigned flags) {
 
 static MDBX_cmp_func *mdbx_default_datacmp(unsigned flags) {
   return !(flags & MDBX_DUPSORT)
-             ? 0
+             ? mdbx_cmp_memn
              : ((flags & MDBX_INTEGERDUP)
                     ? mdbx_cmp_int_ua
                     : ((flags & MDBX_REVERSEDUP) ? mdbx_cmp_memnr