From c8b656bea5e90f1e174bee7e65cbd362914264b3 Mon Sep 17 00:00:00 2001
From: Richard Janis Goldschmidt <janis.beckert@gmail.com>
Date: Sun, 11 Sep 2016 16:48:04 +0200
Subject: [PATCH] Remove unnecessary `cmp::min` from BufWriter::write

The first branch of the if statement already checks if `buf.len() >= self.buf.capacity()`, which makes the `cmp::min(buf.len(), self.buf.capacity())` redundant: the result will always be `buf.len()`. Therefore, we can pass the `buf` slice directly into `Write::write`.
---
 src/libstd/io/buffered.rs | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/libstd/io/buffered.rs b/src/libstd/io/buffered.rs
index a26a932ad2d..dbb45d54f38 100644
--- a/src/libstd/io/buffered.rs
+++ b/src/libstd/io/buffered.rs
@@ -468,8 +468,7 @@ impl<W: Write> Write for BufWriter<W> {
             self.panicked = false;
             r
         } else {
-            let amt = cmp::min(buf.len(), self.buf.capacity());
-            Write::write(&mut self.buf, &buf[..amt])
+            Write::write(&mut self.buf, buf)
         }
     }
     fn flush(&mut self) -> io::Result<()> {