Unregister callbacks from socket, when we return the socket for reuse.

runtime/bin/http_impl.dart

Index: runtime/bin/http_impl.dart
diff --git a/runtime/bin/http_impl.dart b/runtime/bin/http_impl.dart
index 05b1a38b8f105e79425e52d2d345704c36ab6d06..683746ebe9f172463116c51b44fc0e7e36c90cc5 100644
--- a/runtime/bin/http_impl.dart
+++ b/runtime/bin/http_impl.dart
@@ -1111,6 +1111,9 @@ class _HttpClientConnection
         _socket.close();
       }
     } else {
+      _socket.onData = null;

[Søren Gjesse, 2012/04/20 11:07:22]

_returnSocketConnection already does this (calls _markReturned as its last
action).

[Anders Johnsen, 2012/04/20 11:13:42]

It's done iff shutdown is not marked. Is there a odd chance that socket will
send out onData/onClosed after a close() call?

[Søren Gjesse, 2012/04/20 11:27:35]

How about just moving the _markReturned to the top of _returnSocketConnection?

+      _socket.onClosed = null;
+      _socket.onError = null;
       _client._returnSocketConnection(_socketConn);
     }
     _socket = null;