add get_tmp_cache(::OrdinaryDiffEqConstantCache) to Core

Author: oscardssmith

lib/OrdinaryDiffEqCore/src/integrators/integrator_interface.jl

@@ -107,15 +107,11 @@ end
     get_tmp_cache(integrator::ODEIntegrator, integrator.alg, integrator.cache)
 end
 
-# avoid method ambiguity
-# for typ in (Union{RadauIIA3, RadauIIA5, RadauIIA7})
-#     @eval @inline function DiffEqBase.get_tmp_cache(integrator, alg::$typ,
-#             cache::OrdinaryDiffEqConstantCache)
-#         nothing
-#     end
-# end
-
 # the ordering of the cache arrays is important!!!
+@inline function DiffEqBase.get_tmp_cache(integrator, alg::OrdinaryDiffEqAlgorithm,
+        cache::OrdinaryDiffEqConstantCache)
+    nothing
+end
 @inline function DiffEqBase.get_tmp_cache(integrator, alg::OrdinaryDiffEqAlgorithm,
         cache::OrdinaryDiffEqMutableCache)
     (cache.tmp,)