修复测试残留数据产生的数据错误

Author: PatternDirClean

src/test/java/fybug/nulll/pdcache/memory/CacheTest.java

@@ -29,8 +29,9 @@ void setUp() {
     @After
     public
     void tearDown() throws IOException {
-        destruction();
         cache.clear();
+        cache = null;
+        destruction();
     }
 
     @Test