fix useage of h.

Author: MasonProtter

src/systems/diffeqs/abstractodesystem.jl

@@ -1242,7 +1242,9 @@ function DiffEqBase.SDDEProblem{iip}(sys::AbstractODESystem, u0map = [],
     h_oop, h_iip = generate_history(sys, u0)
     h(out, p, t) = h_iip(out, p, t)
     h(p, t) = h_oop(p, t)
-    u0 = h(p..., tspan[1])
+    h(p::MTKParameters, t) = h_oop(p..., t)
+    h(out, p::MTKParameters, t) = h_iip(out, p..., t)
+    u0 = h(p, tspan[1])
     cbs = process_events(sys; callback, kwargs...)
     if has_discrete_subsystems(sys) && (dss = get_discrete_subsystems(sys)) !== nothing
         affects, clocks, svs = ModelingToolkit.generate_discrete_affect(sys, dss...)