backend etcd: avoid nil response by checking etcd error

zhaolion · Oct 26, 2014 · b461108 · b461108
1 parent 0d1283f
commit b461108
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/backends/etcd/client.go b/backends/etcd/client.go
@@ -75,5 +75,8 @@ func (c *Client) WatchPrefix(prefix string, waitIndex uint64, stopChan chan bool
 		return resp.EtcdIndex, nil
 	}
 	resp, err := c.client.Watch(prefix, waitIndex+1, true, nil, stopChan)
+	if err != nil {
+		return waitIndex, err
+	}
 	return resp.Node.ModifiedIndex, err
 }