[GHC] #13445: Fix 32 bit Windows build of GHC 8.2

[GHC]

#13445: Fix 32 bit Windows build of GHC 8.2
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           Reporter:  Phyx-     |             Owner:  (none)
               Type:  bug       |            Status:  new
           Priority:  normal    |         Milestone:  8.2.1
          Component:  Compiler  |           Version:  8.0.1
           Keywords:            |  Operating System:  Windows
       Architecture:  x86       |   Type of failure:  Building GHC failed
          Test Case:            |        Blocked By:
           Blocking:            |   Related Tickets:  #13431
Differential Rev(s):            |         Wiki Page:
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 Current head is broken due to some `-Werr` failures and a bug in `x86
 mingw-w64` distribution. See #13431

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13445>
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