From 429d3f5017a4179734e20464e520b50137c7b128 Mon Sep 17 00:00:00 2001
From: gorhill <rhill@raymondhill.net>
Date: Fri, 23 Oct 2015 12:58:54 -0400
Subject: [PATCH] code review: not all windows have tabs

---
 platform/firefox/vapi-background.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/platform/firefox/vapi-background.js b/platform/firefox/vapi-background.js
index 566dd1a7a..37245d8e3 100644
--- a/platform/firefox/vapi-background.js
+++ b/platform/firefox/vapi-background.js
@@ -789,6 +789,11 @@ vAPI.tabs.getAll = function(window) {
             continue;
         }
 
+        // This can happens if a tab-less window is currently opened.
+        if ( !tabBrowser.tabs ) {
+            continue;
+        }
+
         for ( tab of tabBrowser.tabs ) {
             tabs.push(tab);
         }