防止回放空时报空指针

src/main/java/com/genersoft/iot/vmp/gb28181/transmit/event/request/impl/message/response/cmd/RecordInfoResponseMessageHandler.java

@@ -163,8 +163,9 @@ public class RecordInfoResponseMessageHandler extends SIPRequestProcessorParent
     public void releaseRequest(String deviceId, String sn,RecordInfo recordInfo){
         String key = DeferredResultHolder.CALLBACK_CMD_RECORDINFO + deviceId + sn;
         // 对数据进行排序
-        Collections.sort(recordInfo.getRecordList());
-
+        if(recordInfo!=null && recordInfo.getRecordList()!=null) {
+            Collections.sort(recordInfo.getRecordList());
+        }
         RequestMessage msg = new RequestMessage();
         msg.setKey(key);
         msg.setData(recordInfo);