From 27ddbf4d168875605295c8bdc145c5026188de27 Mon Sep 17 00:00:00 2001
From: Josh Stone <jistone@redhat.com>
Date: Thu, 11 Jul 2019 14:49:15 -0700
Subject: [PATCH] Avoid closures in the default <Zip as ZipImpl>::next

---
 src/libcore/iter/adapters/zip.rs | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/src/libcore/iter/adapters/zip.rs b/src/libcore/iter/adapters/zip.rs
index 06f047d92872e..430ceacdd9fab 100644
--- a/src/libcore/iter/adapters/zip.rs
+++ b/src/libcore/iter/adapters/zip.rs
@@ -94,11 +94,9 @@ impl<A, B> ZipImpl<A, B> for Zip<A, B>
 
     #[inline]
     default fn next(&mut self) -> Option<(A::Item, B::Item)> {
-        self.a.next().and_then(|x| {
-            self.b.next().and_then(|y| {
-                Some((x, y))
-            })
-        })
+        let x = self.a.next()?;
+        let y = self.b.next()?;
+        Some((x, y))
     }
 
     #[inline]