From aa61a592fc35611776c52c35d9c41c15e4e9fd0d Mon Sep 17 00:00:00 2001
From: Daniel Cannon <daniel@danielcannon.co.uk>
Date: Tue, 14 Apr 2015 19:11:26 +0100
Subject: [PATCH] Fix bug with queue data structure

---
 cursor.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/cursor.go b/cursor.go
index 35d5b30d..7629a92c 100644
--- a/cursor.go
+++ b/cursor.go
@@ -412,6 +412,10 @@ type queue struct {
 }
 
 func (q *queue) Len() int {
+	if len(q.elems) == 0 {
+		return 0
+	}
+
 	return q.nelems
 }
 func (q *queue) Push(elem interface{}) {