auto merge of #13886 : japaric/rust/fix-an-typos, r=alexcrichton

Found the first one in the rust reference docs. I was going to submit a PR with one fix, but figured I could look for more... This is the result.

2 files changed, 2 insertions, 2 deletions

diff --git a/src/libstd/io/mod.rs b/src/libstd/io/mod.rs
index 2a4952ec830..d948738ac56 100644
--- a/src/libstd/io/mod.rs
+++ b/src/libstd/io/mod.rs
@@ -1037,7 +1037,7 @@ pub trait Writer {
         self.write([n])
     }
 
-    /// Write a i8 (1 byte).
+    /// Write an i8 (1 byte).
     fn write_i8(&mut self, n: i8) -> IoResult<()> {
         self.write([n as u8])
     }
diff --git a/src/libstd/ptr.rs b/src/libstd/ptr.rs
index f70715ed756..ca7680413a0 100644
--- a/src/libstd/ptr.rs
+++ b/src/libstd/ptr.rs
@@ -131,7 +131,7 @@ pub unsafe fn position<T>(buf: *T, f: |&T| -> bool) -> uint {
     }
 }
 
-/// Create an null pointer.
+/// Create a null pointer.
 ///
 /// # Example
 ///