Major clean-up of std::io

Use ifaces instead of objs, stop wrapping everything in two (or three)
layers of no-value-added indirection, and remove some of the more
pointless/outdated idioms from the code.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/rustdoc/rustdoc.rs b/src/rustdoc/rustdoc.rs
index cfa1fbed676..2afd944ad3e 100755
--- a/src/rustdoc/rustdoc.rs
+++ b/src/rustdoc/rustdoc.rs
@@ -13,6 +13,7 @@ import rustc::syntax::parse::parser;
 import rustc::syntax::print::pprust;
 import rustc::syntax::visit;
 import std::io;
+import io::writer_util;
 import std::map;
 
 type rustdoc = {