Updates with core::fmt changes

1. Wherever the `buf` field of a `Formatter` was used, the `Formatter` is used
   instead.
2. The usage of `write_fmt` is minimized as much as possible, the `write!` macro
   is preferred wherever possible.
3. Usage of `fmt::write` is minimized, favoring the `write!` macro instead.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/libregex/re.rs b/src/libregex/re.rs
index f22889b22a3..899c54d601b 100644
--- a/src/libregex/re.rs
+++ b/src/libregex/re.rs
@@ -117,7 +117,7 @@ pub struct Regex {
 impl fmt::Show for Regex {
     /// Shows the original regular expression.
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(f.buf, "{}", self.original)
+        write!(f, "{}", self.original)
     }
 }