[GHC] #9529: Clean up cseProgram

[GHC]

#9529: Clean up cseProgram
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              Reporter:  dfeuer      |            Owner:
                  Type:  task        |           Status:  patch
              Priority:  normal      |        Milestone:  7.8.4
             Component:  Compiler    |          Version:  7.9
            Resolution:              |         Keywords:
      Operating System:              |     Architecture:  Unknown/Multiple
  Unknown/Multiple                   |       Difficulty:  Easy (less than 1
       Type of failure:              |  hour)
  None/Unknown                       |       Blocked By:
             Test Case:              |  Related Tickets:
              Blocking:              |
Differential Revisions:              |
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Comment (by Simon Peyton Jones <simonpj@…>):

 In [changeset:"48f17f156c3bb608603575ade2788140fadab192/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="48f17f156c3bb608603575ade2788140fadab192"
 Use mapAccumL (refactoring only)

 Fixes Trac #9529
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9529#comment:2>
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