[kbd] Return code of openvt command

On openvt from kbd 2.0.2, `openvt -c 1 -fw /bin/false` exits with
return code 0 instead of 1.

There's a bug report from 2003 and a claim that it was resolved as of
kbd 1.14.1: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=190386

I'm not sure if this is a bug or desired behavior. 

How can I get the return code of the command passed to openvt?