[commit: ghc] ghc-7.2: Generalise the type of minusVarEnv slightly (ff29083)

[Ian Lynagh]

Repository : ssh://darcs.haskell.org//srv/darcs/ghc

On branch  : ghc-7.2

http://hackage.haskell.org/trac/ghc/changeset/ff29083209e5e9d0a5b4a87e2456dee23301b38d

>---------------------------------------------------------------

commit ff29083209e5e9d0a5b4a87e2456dee23301b38d
Author: Simon Peyton Jones <simonpj at microsoft.com>
Date:   Thu Jul 21 12:25:39 2011 +0100

    Generalise the type of minusVarEnv slightly

>---------------------------------------------------------------

 compiler/basicTypes/VarEnv.lhs |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/compiler/basicTypes/VarEnv.lhs b/compiler/basicTypes/VarEnv.lhs
index a28136b..07fabb0 100644
--- a/compiler/basicTypes/VarEnv.lhs
+++ b/compiler/basicTypes/VarEnv.lhs
@@ -375,7 +375,7 @@ filterVarEnv_Directly :: (Unique -> a -> Bool) -> VarEnv a -> VarEnv a
 restrictVarEnv    :: VarEnv a -> VarSet -> VarEnv a
 delVarEnvList     :: VarEnv a -> [Var] -> VarEnv a
 delVarEnv	  :: VarEnv a -> Var -> VarEnv a
-minusVarEnv       :: VarEnv a -> VarEnv a -> VarEnv a
+minusVarEnv       :: VarEnv a -> VarEnv b -> VarEnv a
 intersectsVarEnv  :: VarEnv a -> VarEnv a -> Bool
 plusVarEnv_C	  :: (a -> a -> a) -> VarEnv a -> VarEnv a -> VarEnv a
 mapVarEnv	  :: (a -> b) -> VarEnv a -> VarEnv b