From 57b66d610c0c442f7c4351570953cd426c2bc8fd Mon Sep 17 00:00:00 2001
From: Joannis Orlandos <joannis@orlandos.nl>
Date: Fri, 16 Jun 2017 12:52:27 +0200
Subject: [PATCH] Small bugfix

---
 Sources/BSON/Document.swift | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Sources/BSON/Document.swift b/Sources/BSON/Document.swift
index d9d5389..93ba302 100644
--- a/Sources/BSON/Document.swift
+++ b/Sources/BSON/Document.swift
@@ -163,7 +163,7 @@ public struct Document : Collection, ExpressibleByDictionaryLiteral, Expressible
         
         guard length <= data.count, data.last == 0x00 else {
             invalid = true
-            storage = Array(data[4..<data.count &- 1])
+            storage = Array(data[data.startIndex.advanced(by: 4)..<data.endIndex.advanced(by: -1)])
             return
         }