[GHC] #11028: Refactor ConDecl

[GHC]

#11028: Refactor ConDecl
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        Reporter:  simonpj           |                Owner:  alanz
            Type:  bug               |               Status:  patch
        Priority:  normal            |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  7.10.2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #11155            |  Differential Rev(s):  Phab:D1558
       Wiki Page:                    |
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Comment (by alanz):

 Clarification: the chat took place shortly after the issue was identified.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11028#comment:44>
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