From b9ecf99332786f0040e63d868fa0d799ed1ab765 Mon Sep 17 00:00:00 2001
From: janekptacijarabaci <janekptacijarabaci@seznam.cz>
Date: Mon, 23 Apr 2018 09:02:57 +0200
Subject: moebius#65: Fix: "about:..." - throws an errors

https://github.com/MoonchildProductions/moebius/pull/65
---
 toolkit/modules/sessionstore/FormData.jsm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'toolkit/modules')

diff --git a/toolkit/modules/sessionstore/FormData.jsm b/toolkit/modules/sessionstore/FormData.jsm
index f90ba5825e..d4fb08d939 100644
--- a/toolkit/modules/sessionstore/FormData.jsm
+++ b/toolkit/modules/sessionstore/FormData.jsm
@@ -216,7 +216,7 @@ var FormDataInternal = {
     // We want to avoid saving data for about:sessionrestore as a string.
     // Since it's stored in the form as stringified JSON, stringifying further
     // causes an explosion of escape characters. cf. bug 467409
-    if (isRestorationPage(ret.url)) {
+    if (isRestorationPage(ret.url) && ret.id && ret.id.sessionData) {
       ret.id.sessionData = JSON.parse(ret.id.sessionData);
     }
 
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