[GHC] #8496: Minor typos in STM.c

[GHC]

#8496: Minor typos in STM.c
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        Reporter:  aske        |            Owner:  aske
            Type:  bug         |           Status:  new
        Priority:  lowest      |        Milestone:
       Component:  Compiler    |          Version:  7.6.3
      Resolution:              |         Keywords:
Operating System:              |     Architecture:  Unknown/Multiple
  Unknown/Multiple             |       Difficulty:  Easy (less than 1 hour)
 Type of failure:              |       Blocked By:
  None/Unknown                 |  Related Tickets:
       Test Case:              |
        Blocking:              |
-------------------------------+-------------------------------------------
Changes (by aske):

 * owner:   => aske


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8496#comment:1>
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