patch applied (ghc): remember the type of _result

[Simon Marlow]

Wed Apr 25 07:50:25 PDT 2007  Simon Marlow <simonmar at microsoft.com>
  * remember the type of _result

    M ./compiler/ghci/ByteCodeGen.lhs +1
    M ./compiler/ghci/ByteCodeInstr.lhs -1 +4
    M ./compiler/main/GHC.hs -19 +36