new smatch

*** 57,72 ****
  }
  
  static void call_hooks(void)
  {
          struct return_states_callback *rs_cb;
  
!         __set_fake_cur_stree_fast(all_return_states);
          FOR_EACH_PTR(callback_list, rs_cb) {
                  rs_cb->callback();
          } END_FOR_EACH_PTR(rs_cb);
!         __pop_fake_cur_stree_fast();
  }
  
  static void match_return(int return_id, char *return_ranges, struct expression *expr)
  {
          struct stree *stree;
--- 57,73 ----
  }
  
  static void call_hooks(void)
  {
          struct return_states_callback *rs_cb;
+         struct stree *orig;
  
!         orig = __swap_cur_stree(all_return_states);
          FOR_EACH_PTR(callback_list, rs_cb) {
                  rs_cb->callback();
          } END_FOR_EACH_PTR(rs_cb);
!         __swap_cur_stree(orig);
  }
  
  static void match_return(int return_id, char *return_ranges, struct expression *expr)
  {
          struct stree *stree;
*** 114,131 ****
          return return_stree_stack;
  }
  
  static void free_resources(struct symbol *sym)
  {
-         struct stree *tmp;
- 
          free_stree(&all_return_states);
! 
!         FOR_EACH_PTR(return_stree_stack, tmp) {
!                 free_stree(&tmp);
!         } END_FOR_EACH_PTR(tmp);
!         free_stree_stack(&return_stree_stack);
  }
  
  void register_returns_early(int id)
  {
          RETURN_ID = id;
--- 115,126 ----
          return return_stree_stack;
  }
  
  static void free_resources(struct symbol *sym)
  {
          free_stree(&all_return_states);
!         free_stack_and_strees(&return_stree_stack);
  }
  
  void register_returns_early(int id)
  {
          RETURN_ID = id;