From 77da1aabb3c34b30ca84338efbde0d359adb6d65 Mon Sep 17 00:00:00 2001
From: dhowe <dhowe@users.noreply.github.com>
Date: Mon, 20 Jun 2016 21:28:40 +0800
Subject: [PATCH] Check responseHeaders length before calling pop() (#1739)

This throws an error on Firefox when responseHeaders is 0-length
---
 platform/firefox/vapi-background.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/platform/firefox/vapi-background.js b/platform/firefox/vapi-background.js
index 15d98726a..9239578b8 100644
--- a/platform/firefox/vapi-background.js
+++ b/platform/firefox/vapi-background.js
@@ -2108,7 +2108,7 @@ var httpObserver = {
             return;
         }
 
-        if ( result.responseHeaders ) {
+        if ( result.responseHeaders && result.responseHeaders.length ) {
             channel.setResponseHeader(
                 'Content-Security-Policy',
                 result.responseHeaders.pop().value,