use the given diff_type

Author: jClugstor

lib/OrdinaryDiffEqCore/src/misc_utils.jl

@@ -140,7 +140,7 @@ end
 
 function _bool_to_ADType(::Val{false}, chunksize, diff_type)
     Base.depwarn("Using a `Bool` for keyword argument `autodiff` is deprecated. Please use an `ADType` specifier.", :_bool_to_ADType)
-    return AutoFiniteDiff(fdtype = diff_type())
+    return AutoFiniteDiff(fdtype = diff_type)
 end
 
 # Functions to get ADType type from Bool or ADType object, or ADType type