[Varnish] #1400: -S "" for varnishd is not working

[Varnish]

#1400: -S "" for varnishd is not working
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 Reporter:  quiver  |       Type:  defect
   Status:  new     |   Priority:  normal
Milestone:          |  Component:  varnishd
  Version:  trunk   |   Severity:  normal
 Keywords:          |
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 {{{
 $ git show  909a1efbea8be8276e89dd8a1ceba28d87125c90
 }}}
 says that

 >    If you truly want no authentication of CLI connections, give an
 >    empty -S argument  (-S "") and live with the warning that causes.

 But if I specify -S "" for varnishd, I get error "Error: Cannot open -S
 file (''): No such file or directory" instead of "no CLI authentication"
 warning.

 varnish varsion : varnish-4.0.0-tp1

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Ticket URL: <https://www.varnish-cache.org/trac/ticket/1400>
Varnish <https://varnish-cache.org/>
The Varnish HTTP Accelerator