[Varnish] #639: Assert on writing to CLI when child process dies

[Varnish]

#639: Assert on writing to CLI when child process dies
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 Reporter:  tgr               |        Owner:  phk   
     Type:  defect            |       Status:  closed
 Priority:  normal            |    Milestone:        
Component:  varnishd          |      Version:  2.0   
 Severity:  normal            |   Resolution:  fixed 
 Keywords:  2.0.6 CLI assert  |  
------------------------------+---------------------------------------------
Changes (by phk):

  * status:  new => closed
  * resolution:  => fixed

Comment:

 (In [4517]) Don't assert on write errors to the child process CLI-pipe, it
 might
 simply be dying on us.  Instead return the designed error code for
 this: CLIS_COMM

 Fixes   #639

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Ticket URL: <http://varnish.projects.linpro.no/ticket/639#comment:2>
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