Misclassified hs252 and hs233 as unconstrained (#349)

* Misclassified hs252 as unconstrained

* Update hs233.jl

Author: tmigot

src/Meta/hs233.jl

@@ -10,7 +10,7 @@ hs233_meta = Dict(
   :has_bounds => false,
   :has_fixed_variables => false,
   :objtype => :other,
-  :contype => :unconstrained,
+  :contype => :general,
   :best_known_lower_bound => 0,
   :best_known_upper_bound => 0,
   :is_feasible => true,

src/Meta/hs252.jl

@@ -10,7 +10,7 @@ hs252_meta = Dict(
   :has_bounds => false,
   :has_fixed_variables => false,
   :objtype => :other,
-  :contype => :unconstrained,
+  :contype => :general,
   :best_known_lower_bound => 0.04,
   :best_known_upper_bound => 0.04,
   :is_feasible => true,