Remove redundant `&mut ref mut` in doc for Result::as_mut()

diff --git a/src/libcore/result.rs b/src/libcore/result.rs
index 94c6c636ce8fce6469f374dbfdb730f60051ea3b..c7ca70fc1622d8ea2d811d5a81d2c54bd9104e5e 100644 (file)
--- a/src/libcore/result.rs
+++ b/src/libcore/result.rs
@@ -402,8 +402,8 @@ pub fn as_ref(&self) -> Result<&T, &E> {
     /// ```
     /// fn mutate(r: &mut Result<i32, i32>) {
     ///     match r.as_mut() {
-    ///         Ok(&mut ref mut v) => *v = 42,
-    ///         Err(&mut ref mut e) => *e = 0,
+    ///         Ok(v) => *v = 42,
+    ///         Err(e) => *e = 0,
     ///     }
     /// }
     ///