Warning when running Windows relay with bufferevents
Here's a warning that I got 1.5 minutes after starting my relay running `tor-0.2.3.2-alpha-bufferevents-win32.exe` (from legacy/trac#2001):
```
Aug 08 13:21:59.000 [warn] TLS error while handshaking (with bufferevent) with [scrubbed]: http request (in SSL routines:SSL23_GET_CLIENT_HELLO:SSL23_ST_SR_CLNT_HELLO_A)
```
And just a second before submitting this bug, here are two more:
```
Aug 08 13:42:32.000 [warn] TLS error while handshaking (with bufferevent) with [scrubbed]: http request (in SSL routines:SSL23_GET_CLIENT_HELLO:SSL23_ST_SR_CLNT_HELLO_A)
Aug 08 13:42:52.000 [warn] TLS error while handshaking (with bufferevent) with [scrubbed]: http request (in SSL routines:SSL23_GET_CLIENT_HELLO:SSL23_ST_SR_CLNT_HELLO_A)
```
issue