From e0e1141e74ec8729b68e3362eab753137543f40a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fernando=20Jim=C3=A9nez=20Moreno?= <ferjmoreno@gmail.com>
Date: Sat, 7 Jul 2018 11:04:49 +0200
Subject: [PATCH] Undo trace impl for Mutex<T>

---
 components/script/dom/bindings/trace.rs | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/components/script/dom/bindings/trace.rs b/components/script/dom/bindings/trace.rs
index 7a9d4d7358f..898bb9fe490 100644
--- a/components/script/dom/bindings/trace.rs
+++ b/components/script/dom/bindings/trace.rs
@@ -592,9 +592,9 @@ unsafe impl<U> JSTraceable for TypedSize2D<f32, U> {
     }
 }
 
-unsafe impl<T: JSTraceable> JSTraceable for Mutex<T> {
-    unsafe fn trace(&self, trc: *mut JSTracer) {
-        self.lock().unwrap().trace(trc);
+unsafe impl JSTraceable for Mutex<Option<SharedRt>> {
+    unsafe fn trace(&self, _trc: *mut JSTracer) {
+        // Do nothing.
     }
 }