12724 update smatch to 0.6.1-rc1-il-5

@@ -35,11 +35,10 @@
                 return;
         if (!strcmp(expr->fn->symbol->ident->name, "ERR_PTR"))
                 err_ptr = 1;
 }
 
-extern int check_assigned_expr_id;
 static void match_return(struct expression *ret_value)
 {
         struct state_list *slist;
         struct sm_state *tmp;
         sval_t sval;