Fix OptimizationSystemExpr construction

Author: ChrisRackauckas

src/systems/optimization/optimizationsystem.jl

@@ -90,10 +90,6 @@ struct AutoModelingToolkit <: DiffEqBase.AbstractADType end
 DiffEqBase.OptimizationProblem(sys::OptimizationSystem,args...;kwargs...) =
     DiffEqBase.OptimizationProblem{true}(sys::OptimizationSystem,args...;kwargs...)
 
-OptimizationProblemExpr(sys::OptimizationSystem,args...;kwargs...) =
-    OptimizationProblemExpr{true}(sys::OptimizationSystem,args...;kwargs...)
-
-
 """
 ```julia
 function DiffEqBase.OptimizationProblem{iip}(sys::OptimizationSystem,
@@ -168,6 +164,9 @@ calculating numerical enhancements.
 """
 struct OptimizationProblemExpr{iip} end
 
+OptimizationProblemExpr(sys::OptimizationSystem,args...;kwargs...) =
+    OptimizationProblemExpr{true}(sys::OptimizationSystem,args...;kwargs...)
+    
 function OptimizationProblemExpr{iip}(sys::OptimizationSystem, u0,
                                           parammap=DiffEqBase.NullParameters();
                                           lb=nothing, ub=nothing,

test/controlsystem.jl

@@ -13,4 +13,7 @@ eqs = [
 sys = ControlSystem(loss,eqs,t,[x,v],[u],[p])
 dt = 0.1
 tspan = (0.0,1.0)
-runge_kutta_discretize(sys,dt,tspan)
+sys = runge_kutta_discretize(sys,dt,tspan)
+
+u0 = rand(112) # guess for the state values
+prob = OptimizationProblem(sys,u0,[0.1],grad=true)