[Varnish] #1416: Panic on abandon in vcl_backend_response

[Varnish]

#1416: Panic on abandon in vcl_backend_response
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 Reporter:  fgsch  |       Type:  defect
   Status:  new    |   Priority:  normal
Milestone:         |  Component:  varnishd
  Version:  trunk  |   Severity:  normal
 Keywords:         |
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 See attached test.

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Ticket URL: <https://www.varnish-cache.org/trac/ticket/1416>
Varnish <https://varnish-cache.org/>
The Varnish HTTP Accelerator