[FIX] Fix issue with simplified constructors

Author: trigaut

src/SDPoptimize.jl

@@ -141,9 +141,6 @@ function sdp_optimize(model::SPModel,
                   param::SDPparameters,
                   display=true::Bool)
 
-    function true_fun(t,x,u,w)
-        return true
-    end
     function zero_fun(x)
         return 0
     end

src/objects.jl

@@ -103,7 +103,7 @@ type StochDynProgModel <: SPModel
     noises::Vector{NoiseLaw}
 
     function StochDynProgModel(model::LinearDynamicLinearCostSPmodel, final, cons)
-        return new(model.stageNumber, model.xlim, model.ulim, model.initialState,
+        return StochDynProgModel(model.stageNumber, model.xlim, model.ulim, model.initialState,
                  model.costFunctions, final, model.dynamics, cons,
                  model.noises)
     end
@@ -121,7 +121,7 @@ type StochDynProgModel <: SPModel
             return saved_cost
         end
 
-        return new(model.stageNumber, model.xlim, model.ulim, model.initialState,
+        return StochDynProgModel(model.stageNumber, model.xlim, model.ulim, model.initialState,
                  cost, final, model.dynamics, cons, model.noises)
     end