From 60913bf04590e0cb6d80290b0e15b00046dfaeaa Mon Sep 17 00:00:00 2001
From: Niko Matsakis <niko@alum.mit.edu>
Date: Sat, 2 Jun 2012 20:49:05 -0700
Subject: [PATCH] constrain scope of mut ptr to please borrowck

---
 src/libstd/arc.rs | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/src/libstd/arc.rs b/src/libstd/arc.rs
index 063fdd9b9a4..3445d7399af 100644
--- a/src/libstd/arc.rs
+++ b/src/libstd/arc.rs
@@ -24,9 +24,7 @@ type arc_data<T: const> = {
 resource arc_destruct<T: const>(data: *libc::c_void) {
     unsafe {
         let data: ~arc_data<T> = unsafe::reinterpret_cast(data);
-        let ref_ptr = &mut data.count;
-
-        let new_count = rustrt::rust_atomic_decrement(ref_ptr);
+        let new_count = rustrt::rust_atomic_decrement(&mut data.count);
         assert new_count >= 0;
         if new_count == 0 {
             // drop glue takes over.