From 4568e7495455dd5f8887a511a6a33c58b02d0aec Mon Sep 17 00:00:00 2001
From: Sebastien Ros <sebastien.ros@microsoft.com>
Date: Mon, 28 Apr 2014 10:44:18 -0700
Subject: [PATCH] Adding null check in ctor

---
 .../Authorization/DefaultAuthorizationService.cs         | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/Microsoft.AspNet.Security/Authorization/DefaultAuthorizationService.cs b/src/Microsoft.AspNet.Security/Authorization/DefaultAuthorizationService.cs
index 7faf3430e3..09a4d9a95b 100644
--- a/src/Microsoft.AspNet.Security/Authorization/DefaultAuthorizationService.cs
+++ b/src/Microsoft.AspNet.Security/Authorization/DefaultAuthorizationService.cs
@@ -15,7 +15,14 @@ namespace Microsoft.AspNet.Security.Authorization
 
         public DefaultAuthorizationService(IEnumerable<IAuthorizationPolicy> policies)
         {
-            _policies = policies.OrderBy(x => x.Order).ToArray();
+            if (policies == null)
+            {
+                _policies = Enumerable.Empty<IAuthorizationPolicy>().ToArray();
+            } 
+            else 
+            {
+                _policies = policies.OrderBy(x => x.Order).ToArray();
+            }
         }
 
         public async Task<bool> AuthorizeAsync(IEnumerable<Claim> claims, ClaimsPrincipal user)