解决使用内置存储文件上传时内存释放问题

broker/src/main/java/com/xiaoleilu/loServer/action/UploadFileAction.java

@@ -131,6 +131,7 @@ public class UploadFileAction extends Action {
                 }
 
                 readHttpDataChunkByChunk(response, decoder, requestId, HttpHeaders.isKeepAlive(request));
+                decoder.destroy();
                 
                 if (chunk instanceof LastHttpContent) {