[GHC] #4904: Documentation for mkWeakIORef is misleading

[GHC]

#4904: Documentation for mkWeakIORef is misleading
---------------------------------+------------------------------------------
    Reporter:  adept             |       Owner:  adept            
        Type:  feature request   |      Status:  new              
    Priority:  normal            |   Component:  libraries/base   
     Version:  7.0.1             |    Keywords:  mkWeakIORef      
    Testcase:                    |   Blockedby:                   
          Os:  Unknown/Multiple  |    Blocking:                   
Architecture:  Unknown/Multiple  |     Failure:  Documentation bug
---------------------------------+------------------------------------------
 Documentation for mkWeakIORef should mention that second value is used as
 finalizer (and not, say, as key or value).

 Patch attached.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4904>
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