stage1 修改部分测试 完成17-19测试

stage1/test10_struct.spl

@@ -46,12 +46,12 @@ fn main() i32 {
     if r != 25 { ret 6; }
 
     /* 结构体嵌套 */
-    type Inner = struct {
-        val: i32,
-    }
     type Outer = struct {
         inner: Inner,
         extra: i32,
+        type Inner = struct {
+            val: i32,
+        }
     }
 
     var o: Outer;