Reviewed-by: Peter Müller <peter.mueller(a)ipfire.org>

In my opinion, this fixes #11713.

> Signed-off-by: Erik Kapfer <ummeegge(a)ipfire.org>
> ---
>  html/cgi-bin/ovpnmain.cgi | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/html/cgi-bin/ovpnmain.cgi b/html/cgi-bin/ovpnmain.cgi
> index ce9524df7..00ecd77a0 100644
> --- a/html/cgi-bin/ovpnmain.cgi
> +++ b/html/cgi-bin/ovpnmain.cgi
> @@ -2513,7 +2513,7 @@ else
>  # CCD end
>  		# Update collectd configuration and delete all RRD files of the removed connection
>  		&writecollectdconf();
> -		system ("/usr/local/bin/openvpnctrl -drrd $confighash{$cgiparams{'KEY'}}[1]");
> +		system ('/usr/local/bin/openvpnctrl', '-drrd', $confighash{$cgiparams{'KEY'}}[1]);
>  
>  		delete $confighash{$cgiparams{'KEY'}};
>  		my $temp2 = `/usr/bin/openssl ca -gencrl -out ${General::swroot}/ovpn/crls/cacrl.pem -config ${General::swroot}/ovpn/openssl/ovpn.cnf`;
>