From 1a2364aec03ca0f488b29265c5f11ace5932e307 Mon Sep 17 00:00:00 2001
From: John Arbash Meinel <john@arbash-meinel.com>
Date: Tue, 16 Jan 2018 14:22:15 +0200
Subject: [PATCH] Brings in a patch on having flusher not suppress errors.

https://github.com/go-mgo/mgo/pull/360
---
 txn/flusher.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/txn/flusher.go b/txn/flusher.go
index 3d1882d7f..5d1c1bdd8 100644
--- a/txn/flusher.go
+++ b/txn/flusher.go
@@ -759,7 +759,7 @@ func (f *flusher) checkpoint(t *transaction, revnos []int64) error {
 		f.debugf("Ready to apply %s. Saving revnos %v: LOST RACE", t, debugRevnos)
 		return f.reload(t)
 	}
-	return nil
+	return err
 }
 
 func (f *flusher) apply(t *transaction, pull map[bson.ObjectId]*transaction) error {