Fix TcSplice after some type family related changes

Mon Sep 18 19:04:12 EDT 2006  Manuel M T Chakravarty <chak@cse.unsw.edu.au>
  * Fix TcSplice after some type family related changes
  Wed Aug 16 19:51:27 EDT 2006  Manuel M T Chakravarty <chak@cse.unsw.edu.au>
    * Fix TcSplice after some type family related changes

compiler/typecheck/TcSplice.lhs

@@ -585,12 +585,10 @@ reifyTyCon tc
   | isFunTyCon tc  = return (TH.PrimTyConI (reifyName tc) 2 		  False)
   | isPrimTyCon tc = return (TH.PrimTyConI (reifyName tc) (tyConArity tc) (isUnLiftedTyCon tc))
   | isSynTyCon tc
-  = case synTyConDefn tc of
-      Nothing         -> noTH SLIT("type family") (ppr tc)
-      Just (tvs, rhs) -> 
-        do { rhs' <- reifyType rhs
-	   ; return (TH.TyConI $ 
-		       TH.TySynD (reifyName tc) (reifyTyVars tvs) rhs') }
+  = do { let (tvs, rhs) = synTyConDefn tc 
+       ; rhs' <- reifyType rhs
+       ; return (TH.TyConI $ 
+		   TH.TySynD (reifyName tc) (reifyTyVars tvs) rhs') }
 
 reifyTyCon tc
   = do 	{ cxt <- reifyCxt (tyConStupidTheta tc)