From 30259da0f0d12d56bcc39ea4893b327a720d469f Mon Sep 17 00:00:00 2001
From: WANG Ziqin <i@wangziq.in>
Date: Fri, 2 Aug 2019 02:15:22 +0800
Subject: [PATCH] fix nil pointer dereference: check err first

---
 worker/provider.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/worker/provider.go b/worker/provider.go
index 90c9c0e..7ea6b60 100644
--- a/worker/provider.go
+++ b/worker/provider.go
@@ -141,10 +141,10 @@ func newMirrorProvider(mirror mirrorConfig, cfg *Config) mirrorProvider {
 			retry:       mirror.Retry,
 		}
 		p, err := newRsyncProvider(rc)
-		p.isMaster = isMaster
 		if err != nil {
 			panic(err)
 		}
+		p.isMaster = isMaster
 		provider = p
 	case provTwoStageRsync:
 		rc := twoStageRsyncConfig{