Use isEmptyUniqSet rather than isNullUFM

diff --git a/compiler/rename/RnExpr.lhs b/compiler/rename/RnExpr.lhs
index d6a8713..ae26383 100644 (file)
--- a/compiler/rename/RnExpr.lhs
+++ b/compiler/rename/RnExpr.lhs
@@ -53,8 +53,7 @@ import NameSet
 import UniqFM
 import RdrName         ( RdrName, extendLocalRdrEnv, lookupLocalRdrEnv, hideSomeUnquals )
 import LoadIface       ( loadInterfaceForName )
-import UniqFM          ( isNullUFM )
-import UniqSet         ( emptyUniqSet )
+import UniqSet         ( isEmptyUniqSet, emptyUniqSet )
 import List            ( nub )
 import Util            ( isSingleton )
 import ListSetOps      ( removeDups )
@@ -112,7 +111,7 @@ rnExprs ls = rnExprs' ls emptyUniqSet
     returnM (expr':exprs', fvExprs)
 
 -- Grubby little function to do "seq" on namesets; replace by proper seq when GHC can do seq
-grubby_seqNameSet ns result | isNullUFM ns = result
+grubby_seqNameSet ns result | isEmptyUniqSet ns = result
                            | otherwise    = result
 \end{code}