[GHC] #8342: System.Directory.getPermissions does not work well on Windows 7

[GHC]

#8342: System.Directory.getPermissions does not work well on Windows 7
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        Reporter:  freizl               |            Owner:
            Type:  bug                  |           Status:  new
        Priority:  normal               |        Milestone:
       Component:  libraries/directory  |          Version:  7.4.1
      Resolution:                       |         Keywords:
Operating System:  Windows              |     Architecture:  x86_64 (amd64)
 Type of failure:  None/Unknown         |       Difficulty:  Unknown
       Test Case:                       |       Blocked By:
        Blocking:                       |  Related Tickets:
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Comment (by leroux):

 A quick, hacky fix would be to remove any trailing slashes...

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8342#comment:1>
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