tiny fix (#1399)

Signed-off-by: rleungx <rleungx@gmail.com>

go.mod

@@ -37,7 +37,7 @@ require (
 	github.com/pingcap/check v0.0.0-20171206051426-1c287c953996
 	github.com/pingcap/errcode v0.0.0-20180921232412-a1a7271709d9
 	github.com/pingcap/errors v0.10.1 // indirect
-	github.com/pingcap/gofail v0.0.0-20181115114620-e47081505b9c
+	github.com/pingcap/gofail v0.0.0-20181217135706-6a951c1e42c3
 	github.com/pingcap/kvproto v0.0.0-20181123124450-d48563486f61
 	github.com/pkg/errors v0.8.0
 	github.com/pmezard/go-difflib v1.0.0 // indirect
@@ -68,5 +68,3 @@ require (
 	gopkg.in/gemnasium/logrus-airbrake-hook.v2 v2.1.2 // indirect
 	gopkg.in/natefinch/lumberjack.v2 v2.0.0-20170531160350-a96e63847dc3
 )
-
-replace github.com/etcd-io/gofail => github.com/pingcap/gofail v0.0.0-20181114091844-fbac950f3c9c

go.sum

@@ -76,8 +76,8 @@ github.com/pingcap/errcode v0.0.0-20180921232412-a1a7271709d9 h1:KH4f4Si9XK6/IW5
 github.com/pingcap/errcode v0.0.0-20180921232412-a1a7271709d9/go.mod h1:4b2X8xSqxIroj/IZ9MX/VGZhAwc11wB9wRIzHvz6SeM=
 github.com/pingcap/errors v0.10.1 h1:fGVuPMtwNcxbzQ3aoRyyi6kxvXKMkEsceP81f3b8wsk=
 github.com/pingcap/errors v0.10.1/go.mod h1:Oi8TUi2kEtXXLMJk9l1cGmz20kV3TaQ0usTwv5KuLY8=
-github.com/pingcap/gofail v0.0.0-20181115114620-e47081505b9c h1:nYlcWGAYxDMdiRLjyhNJB9tMSuGaqu2M/CVd2RJx4QQ=
-github.com/pingcap/gofail v0.0.0-20181115114620-e47081505b9c/go.mod h1:DazNTg0PTldtpsQiT9I5tVJwV1onHMKBBgXzmJUlMns=
+github.com/pingcap/gofail v0.0.0-20181217135706-6a951c1e42c3 h1:04yuCf5NMvLU8rB2m4Qs3rynH7EYpMno3lHkewIOdMo=
+github.com/pingcap/gofail v0.0.0-20181217135706-6a951c1e42c3/go.mod h1:DazNTg0PTldtpsQiT9I5tVJwV1onHMKBBgXzmJUlMns=
 github.com/pingcap/kvproto v0.0.0-20181123124450-d48563486f61 h1:Yms1MiO/ezhE9ozwEOnlh/HrEFHX/r3fPCV6vNThGDM=
 github.com/pingcap/kvproto v0.0.0-20181123124450-d48563486f61/go.mod h1:0gwbe1F2iBIjuQ9AH0DbQhL+Dpr5GofU8fgYyXk+ykk=
 github.com/pkg/errors v0.8.0 h1:WdK/asTD0HN+q6hsWO3/vpuAkAr+tw6aNJNDFFf0+qw=