[GHC] #13174: Fix mismatch between unsafeDupablePerformIO and note

[GHC]

#13174: Fix mismatch between unsafeDupablePerformIO and note
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        Reporter:  dfeuer            |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.2.1
       Component:  Core Libraries    |              Version:  8.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"18312086a48c90b22583c81fdb7bd2d7bfd38991/ghc"
 18312086/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="18312086a48c90b22583c81fdb7bd2d7bfd38991"
 base: Kill out-of-date Notes

 These were rendered out-of-date by D1103. Resolves #13174.
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13174#comment:2>
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