Use `null()`/`null_mut()` instead of `0 as *const T`/`0 as *mut T`

1 files changed, 2 insertions, 1 deletions

diff --git a/src/libstd/io/lazy.rs b/src/libstd/io/lazy.rs
index c3e309d182b..ad17a650336 100644
--- a/src/libstd/io/lazy.rs
+++ b/src/libstd/io/lazy.rs
@@ -11,6 +11,7 @@
 use prelude::v1::*;
 
 use cell::Cell;
+use ptr;
 use rt;
 use sync::{StaticMutex, Arc};
 
@@ -26,7 +27,7 @@ impl<T: Send + Sync + 'static> Lazy<T> {
     pub const fn new(init: fn() -> Arc<T>) -> Lazy<T> {
         Lazy {
             lock: StaticMutex::new(),
-            ptr: Cell::new(0 as *mut _),
+            ptr: Cell::new(ptr::null_mut()),
             init: init
         }
     }