-- This checks the argument types and
-- ambiguity of the existential context (if any)
addErrCtxt (existentialCtxt con)
- (checkFreeness ex_tvs ex_theta)
+ (checkFreeness ex_tvs ex_theta)
where
ctxt = ConArgCtxt (dataConName con)
(_, _, ex_tvs, ex_theta, _, _) = dataConSig con