Morgan middleware is missing response-time/content-length due to use of response.socket.end()

[KAJed82]

I've not dug in to why morgan fails in this case, but when a cache-hit is successful it is unable to register response times or content content length. This seems to be due to morgan relying on the lifetime events fired by response.send/end. Note that firing res.end() after socket.end() does fix the response time but leaves content-length empty (headers are of course correct but morgan results are not)