stage1 完成11-13测试

stage1/test15_defer.spl

@@ -28,12 +28,18 @@ fn main() i32 {
     with_cleanup();
     vm_printf("after with_cleanup\n");
 
+    /* 多个 defer 应逆序执行出作用域应该立刻执行，包括循环作用域 */
+    {
+        defer vm_printf("block defer last\n");
+        defer vm_printf("block defer middle\n");
+        defer vm_printf("block defer first (should print third)\n");
+    }
+
     /* 多个 defer 应逆序执行 */
     defer vm_printf("defer last\n");
     defer vm_printf("defer middle\n");
     defer vm_printf("defer first (should print third)\n");
 
     vm_printf("--- defer test end ---\n");
-
     ret 0;
 }