From a7d8d46306d37845d5375b21059192ce89050ac1 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Tue, 4 Sep 2012 00:34:28 -0700
Subject: [PATCH] avoid null in json response

---
 weed-fs/src/cmd/weed/master.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/weed-fs/src/cmd/weed/master.go b/weed-fs/src/cmd/weed/master.go
index a92b7c0f1..29b05efce 100644
--- a/weed-fs/src/cmd/weed/master.go
+++ b/weed-fs/src/cmd/weed/master.go
@@ -43,7 +43,7 @@ func dirLookupHandler(w http.ResponseWriter, r *http.Request) {
 	volumeId, _ := storage.NewVolumeId(vid)
 	machines, e := mapper.Get(volumeId)
 	if e == nil {
-	  var ret []map[string]string
+	  ret:= []map[string]string{}
 	  for _, machine := range machines {
 	    ret = append(ret,map[string]string{"url": machine.Url, "publicUrl": machine.PublicUrl})
 	  }