bigcouch restart produces one single mochiweb_request error

[Wed, 15 Jan 2014 11:55:30 GMT] [info] [<0.86.0>] [--------] Apache CouchDB has started on http://127.0.0.1:5986/
[Wed, 15 Jan 2014 11:55:31 GMT] [info] [<0.306.0>] [a5e49fdc] undefined - - 'GET' / 200
[Wed, 15 Jan 2014 11:55:32 GMT] [error] [<0.306.0>] [a5e49fdc] Uncaught error in HTTP reques
t: {exit,normal}
[Wed, 15 Jan 2014 11:55:32 GMT] [info] [<0.306.0>] [a5e49fdc] Stacktrace: [{mochiweb_request
,send,2},
                                           {mochiweb_request,respond,2},
                                           {couch_httpd,send_response,4},
                                           {chttpd,handle_request,1},
                                           {mochiweb_http,headers,5},

i think this is not critical, but annoying because we want a bigcouch log which is clean from errors.

(from redmine: created on 2014-01-15, closed on 2014-01-28, relates #5005 (closed))