From eafe93096caa3cad22c5ccbaa64abd9708825f70 Mon Sep 17 00:00:00 2001
From: Andy Street <andrews@fb.com>
Date: Wed, 22 Apr 2015 09:10:58 -0700
Subject: [PATCH] [react_native] JS files from D2012956:     [react_native]
 Never return null from XHR.getAllResponseHeaders if request has completed

---
 Libraries/Network/XMLHttpRequestBase.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Libraries/Network/XMLHttpRequestBase.js b/Libraries/Network/XMLHttpRequestBase.js
index cfd1e35cc9..4a4f16ac68 100644
--- a/Libraries/Network/XMLHttpRequestBase.js
+++ b/Libraries/Network/XMLHttpRequestBase.js
@@ -60,6 +60,7 @@ class XMLHttpRequestBase {
       }
       return headers.join('\n');
     }
+    // according to the spec, return null <==> no response has been received
     return null;
   }
 
@@ -131,7 +132,7 @@ class XMLHttpRequestBase {
       return;
     }
     this.status = status;
-    this.responseHeaders = responseHeaders;
+    this.responseHeaders = responseHeaders || {};
     this.responseText = responseText;
     this._setReadyState(this.DONE);
     this._sendLoad();