From 95b73b979e8b78b8e288eb0c5720dbb80da2ba53 Mon Sep 17 00:00:00 2001
From: Hiroyuki Ikezoe <hikezoe@mozilla.com>
Date: Fri, 10 Mar 2017 10:43:35 +0900
Subject: [PATCH] Use borrow() instead of borrow_mut() for
 PerDocumentStyleData.

We don't mutate any PerDocumentStyleData in Servo_StyleSet_FillKeyframesForName.
---
 ports/geckolib/glue.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ports/geckolib/glue.rs b/ports/geckolib/glue.rs
index 15ca0c5a52f..d50a4c74371 100644
--- a/ports/geckolib/glue.rs
+++ b/ports/geckolib/glue.rs
@@ -1431,7 +1431,7 @@ pub extern "C" fn Servo_StyleSet_FillKeyframesForName(raw_data: RawServoStyleSet
     use style::gecko_bindings::structs::Keyframe;
     use style::properties::LonghandIdSet;
 
-    let data = PerDocumentStyleData::from_ffi(raw_data).borrow_mut();
+    let data = PerDocumentStyleData::from_ffi(raw_data).borrow();
     let name = unsafe { Atom::from(name.as_ref().unwrap().as_str_unchecked()) };
     let style_timing_function = unsafe { timing_function.as_ref().unwrap() };
     let style = ComputedValues::as_arc(&style);