From 5c80b7aabbbcd140dfefee745a8bad41262ac753 Mon Sep 17 00:00:00 2001
From: Corey Farwell <coreyf@rwell.org>
Date: Thu, 9 Apr 2015 08:59:48 -0700
Subject: [PATCH] Simplify iterator logic for Fuse

---
 src/libcore/iter.rs | 20 ++++++--------------
 1 file changed, 6 insertions(+), 14 deletions(-)

diff --git a/src/libcore/iter.rs b/src/libcore/iter.rs
index 527a7297f85..9f378748d20 100644
--- a/src/libcore/iter.rs
+++ b/src/libcore/iter.rs
@@ -2197,13 +2197,9 @@ impl<I> Iterator for Fuse<I> where I: Iterator {
         if self.done {
             None
         } else {
-            match self.iter.next() {
-                None => {
-                    self.done = true;
-                    None
-                }
-                x => x
-            }
+            let next = self.iter.next();
+            self.done = next.is_none();
+            next
         }
     }
 
@@ -2224,13 +2220,9 @@ impl<I> DoubleEndedIterator for Fuse<I> where I: DoubleEndedIterator {
         if self.done {
             None
         } else {
-            match self.iter.next_back() {
-                None => {
-                    self.done = true;
-                    None
-                }
-                x => x
-            }
+            let next = self.iter.next_back();
+            self.done = next.is_none();
+            next
         }
     }
 }