Update for stabilized io::Error

As per rust-lang/rust#23919, the last argument
was removed from Error::new.

Signed-off-by: Anders Kaseorg <[email protected]>

Author: andersk

src/lib.rs

@@ -224,7 +224,7 @@
 #![doc(html_logo_url = "http://www.rust-lang.org/logos/rust-logo-128x128-blk.png",
        html_favicon_url = "http://www.rust-lang.org/favicon.ico",
        html_root_url = "http://doc.rust-lang.org/rand/")]
-#![feature(core, io, step_by)]
+#![feature(step_by)]
 
 #![cfg_attr(test, feature(test))]
 

src/read.rs

@@ -68,7 +68,7 @@ fn fill(r: &mut Read, mut buf: &mut [u8]) -> io::Result<()> {
     while buf.len() > 0 {
         match try!(r.read(buf)) {
             0 => return Err(io::Error::new(io::ErrorKind::Other,
-                                           "end of file reached", None)),
+                                           "end of file reached")),
             n => buf = &mut mem::replace(&mut buf, &mut [])[n..],
         }
     }