-- getLIE/extendLIEs: see Note [Hopping the LIE in lazy patterns]
-- Check no existentials
- ; if (null pat_tvs) then return ()
- else lazyPatErr lpat pat_tvs
+ ; unless (null pat_tvs) $ lazyPatErr lpat pat_tvs
-- Check that the pattern has a lifted type
; pat_tv <- newBoxyTyVar liftedTypeKind