Fix some runtime state

Author: rmosolgo

lib/graphql/execution/interpreter/runtime.rb

@@ -505,6 +505,8 @@ def evaluate_selection_with_args(arguments, field_defn, ast_node, field_ast_node
             end
 
             st = get_current_runtime_state
+            st.current_field = field_defn
+            st.current_object = object
             st.current_arguments = resolved_arguments
             st.current_result_name = result_name
             st.current_result = selection_result
@@ -790,7 +792,7 @@ def continue_field(value, owner_type, field, current_type, ast_node, next_select
                   st = get_current_runtime_state
                   st.current_object = continue_value
                   st.current_result_name = nil
-                  st.current_result = nil
+                  st.current_result = this_result
 
                   call_method_on_directives(:resolve, continue_value, selections.graphql_directives) do
                     evaluate_selections(