_HttpInputStream can fire both onError and onClosed

[nex3]

The following code consistently reproduces this:

    void main() {
      var server = new HttpServer();
      server.defaultRequestHandler = (request, response) {
        request.inputStream.onData = request.inputStream.read;
        request.inputStream.onClosed = response.outputStream.close;
      };
      server.listen('127.0.0.1', 0);

      var client = new HttpClient();
      var url = new Uri.fromString("http://localhost:${server.port}");
      var connection = client.openUrl("GET", url);
      connection.onError = (e) => print("connection error: $e");
      connection.onRequest = (request) => request.outputStream.close();
      connection.onResponse = (response) {
        response.inputStream.onData = response.inputStream.read;
        response.inputStream.onError = (e) => print("response stream error: $e");
        response.inputStream.onClosed = () {
          print("response stream closed");
          server.close();
        };

        print("response headers received");
        client.shutdown(force: true);
      };
    }

[nex3]

Added this to the M2 milestone.
Removed Priority-Medium label.
Added Priority-High label.

[madsager]

Set owner to @sgjesse.

[sgjesse]

Fixed in https://code.google.com/p/dart/source/detail?r=15570.

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Added Fixed label.

[kevmoo]

Removed Area-IO label.
Added Area-Library, Library-IO labels.