small fixes

Author: ChrisRackauckas

src/integrators/integrator_utils.jl

@@ -189,7 +189,7 @@ end
 end
 
 @inline function solution_endpoint_match_cur_integrator!(integrator)
-  if integrator.opts.save_end && integrator.sol.t[integrator.saveiter] != integrator.t
+  if integrator.opts.save_end && (integrator.saveiter == 0 || integrator.sol.t[integrator.saveiter] != integrator.t)
     integrator.saveiter += 1
     copyat_or_push!(integrator.sol.t,integrator.saveiter,integrator.t)
     if integrator.opts.save_idxs == nothing