httpd uses access time instead of modification time for date header

[Ezequiel Garzón]

Greetings! I'm using the original 5.6 release of OpenBSD, and httpd is
using for the "Date" HTTP header the access time of the file instead of
the modification time. Here are two consecutive requests:

$ curl -I eze
HTTP/1.1 200 OK
Connection: keep-alive
Content-Length: 1
Content-Type: text/html
Date: Sat, 22 Nov 2014 16:48:24 GMT
Server: OpenBSD httpd

$ curl -I eze
HTTP/1.1 200 OK
Connection: keep-alive
Content-Length: 1
Content-Type: text/html
Date: Sat, 22 Nov 2014 16:48:29 GMT
Server: OpenBSD httpd

Has this been reported? Should I use sendbug(1)?