update single-header version

headers/meta.hpp/meta_states/function.hpp

@@ -128,6 +128,7 @@ namespace meta_hpp::detail
         };
 
         state.pointer = function_ptr;
+
         state.invoke = make_function_invoke<Policy>(registry, function_ptr);
         state.invoke_error = make_function_invoke_error<Function>(registry);
         state.arguments = make_function_arguments<Function>();

headers/meta.hpp/meta_states/member.hpp

@@ -204,6 +204,7 @@ namespace meta_hpp::detail
         };
 
         state.pointer = member_ptr;
+
         state.getter = make_member_getter<Policy>(registry, member_ptr);
         state.setter = make_member_setter(registry, member_ptr);
         state.getter_error = make_member_getter_error<Member>(registry);

headers/meta.hpp/meta_states/method.hpp

@@ -140,6 +140,7 @@ namespace meta_hpp::detail
         };
 
         state.pointer = method_ptr;
+
         state.invoke = make_method_invoke<Policy>(registry, method_ptr);
         state.invoke_error = make_method_invoke_error<Method>(registry);
         state.arguments = make_method_arguments<Method>();

headers/meta.hpp/meta_states/variable.hpp

@@ -125,6 +125,7 @@ namespace meta_hpp::detail
         };
 
         state.pointer = variable_ptr;
+
         state.getter = make_variable_getter<Policy>(registry, variable_ptr);
         state.setter = make_variable_setter(registry, variable_ptr);
         state.setter_error = make_variable_setter_error<Pointer>(registry);