From 6e25ae612a3ceb1711fc578e2959f6ff59abe96c Mon Sep 17 00:00:00 2001
From: wolfbeast <mcwerewolf@gmail.com>
Date: Thu, 15 Nov 2018 09:29:51 +0100
Subject: [PATCH] Fix build bustage.

Tag #871
---
 dom/base/nsCCUncollectableMarker.cpp | 1 -
 1 file changed, 1 deletion(-)

diff --git a/dom/base/nsCCUncollectableMarker.cpp b/dom/base/nsCCUncollectableMarker.cpp
index 0384e6e509..db4d0d3512 100644
--- a/dom/base/nsCCUncollectableMarker.cpp
+++ b/dom/base/nsCCUncollectableMarker.cpp
@@ -194,7 +194,6 @@ MarkDocument(nsIDocument* aDoc, bool aCleanupJS, bool aPrepareForCC)
     return;
   }
 
-  nsIDocument *doc = aViewer->GetDocument();
   if (aDoc->GetMarkedCCGeneration() != nsCCUncollectableMarker::sGeneration) {
     aDoc->MarkUncollectableForCCGeneration(nsCCUncollectableMarker::sGeneration);
     if (aCleanupJS) {