fix

Author: oscarddssmith

src/problems/ode_problems.jl

@@ -199,7 +199,6 @@ function ODEProblem(f, u0, tspan, p = NullParameters(); kwargs...)
     _u0 = prepare_initial_state(u0)
     _tspan = promote_tspan(tspan)
     _f = if iip
-        out = copy(u0) # TODO: do this properly
         ODEFunction{iip, FullSpecialize}(DUMB_WRAPPER(p, first(_tspan), ODE_F_WRAPPER(f)))
     else
         _f = ODEFunction{iip, DEFAULT_SPECIALIZATION}(f)