From 6e538edea2557018c3c8eae41aacf6cdf6370a4d Mon Sep 17 00:00:00 2001
From: blake2-ppc <blake2-ppc>
Date: Wed, 11 Sep 2013 01:57:08 +0200
Subject: [PATCH] rt::io: Use vec::reserve_additional

---
 src/libstd/rt/io/extensions.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/libstd/rt/io/extensions.rs b/src/libstd/rt/io/extensions.rs
index e221f0ee94d..1c48d6e7f1e 100644
--- a/src/libstd/rt/io/extensions.rs
+++ b/src/libstd/rt/io/extensions.rs
@@ -303,7 +303,7 @@ impl<T: Reader> ReaderUtil for T {
             let start_len = buf.len();
             let mut total_read = 0;
 
-            buf.reserve_at_least(start_len + len);
+            buf.reserve_additional(len);
             vec::raw::set_len(buf, start_len + len);
 
             do (|| {