Nginx fails to start : SSL erro without SSL use

[Kata Goto]

Hi all,

I'm new to OpenBSD but it is not a reason to protect me, be hard!
Has I said I can't launch nginx, I have an error with SSL instead of I'm
not using it.
My *configuration* :
OpenBSD 5.1 GENERIC#160 i386
My *nginx version* :
nginx-1.0.11
My */etc/nginx/nginx.conf*:
user _nginx;
worker_processes  1;
events {
    worker_connections  1024;
}
http {
    include       mime.types;
    default_type  application/octet-stream;
    sendfile        on;
    keepalive_timeout  65;
    server {
        listen       80;
        server_name  localhost;
        location / {
            proxy_pass http://127.0.0.1:8080/;
            proxy_redirect off;
            proxy_set_header   Host             $host;
            proxy_set_header   X-Real-IP        $remote_addr;
            proxy_set_header   X-Forwarded-For
$proxy_add_x_forwarded_for;
        }
    }
}

So I tried the following things :
*# ps aux | grep nginx      *
root     15646  0.0  0.0   720     4 p0  R+     9:07PM
0:00.00 grep nginx (ksh)
*# /etc/rc.d/nginx -d start *
doing rc_read_runfile
doing rc_check
nginx
doing rc_start
Auto configuration failed
656077660:error:0E065068:configuration file routines:
STR_COPY:variable has no value:/usr/src/lib/libssl/crypto/
../src/crypto/conf/conf_def.c:618:line 37
doing rc_rm_runfile
(failed)
*# ps aux | grep nginx*
root     16463  0.0  0.0   720     4 p0  R+     9:09PM
0:00.00 grep nginx (ksh)
*# /usr/local/sbin/nginx*
Auto configuration failed
793330524:error:0E065068:configuration file routines:
STR_COPY:variable has no value:/usr/src/lib/libssl/crypto/
../src/crypto/conf/conf_def.c:618:line 37
*# ps aux | grep nginx*
root     17415  0.0  0.0   720     4 p0  R+     9:10PM
0:00.00 grep nginx (ksh)
*# /usr/local/sbin/nginx -t*
Auto configuration failed
726610780:error:0E065068:configuration file routines:
STR_COPY:variable has no value:/usr/src/lib/libssl/crypto/
../src/crypto/conf/conf_def.c:618:line 37

Nginx was working well (but not the rc.d script, it's an other issue,
I'm trying to forward step by step) then I tried to setup OpenVPN
since it doesn't work any more :/

For your help,
In advance,
Thanks.