xbutil reset return code is 0 on error

[mortbopet]

Running

xbutil reset --device xxx

and with the device ID not being found, an error is reported:

ERROR: Specified device BDF 'xxx' not found
 Available devices:
  [yyy] : ...

I'd expect the program's return code to be non-zero given the error - however, 0 is returned. This is slightly annoying since it forces me to check stderr for any ERROR substrings to catch this.