From ccb218616b1f07724ddf46841ac83882e06bc73d Mon Sep 17 00:00:00 2001
From: Michael McConville <mmcco@mykolab.com>
Date: Thu, 17 Dec 2015 00:36:31 -0500
Subject: [PATCH] Trivial cleanup

Remove a needless variable and simply a cfg().
---
 src/libstd/rand/os.rs | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/libstd/rand/os.rs b/src/libstd/rand/os.rs
index d1bd013e67b..c4f59d51f5d 100644
--- a/src/libstd/rand/os.rs
+++ b/src/libstd/rand/os.rs
@@ -42,7 +42,7 @@ mod imp {
         const NR_GETRANDOM: libc::c_long = 355;
         #[cfg(any(target_arch = "arm", target_arch = "powerpc"))]
         const NR_GETRANDOM: libc::c_long = 384;
-        #[cfg(any(target_arch = "aarch64"))]
+        #[cfg(target_arch = "aarch64")]
         const NR_GETRANDOM: libc::c_long = 278;
 
         unsafe {
@@ -60,8 +60,7 @@ mod imp {
 
     fn getrandom_fill_bytes(v: &mut [u8]) {
         let mut read = 0;
-        let len = v.len();
-        while read < len {
+        while read < v.len() {
             let result = getrandom(&mut v[read..]);
             if result == -1 {
                 let err = errno() as libc::c_int;