Merge pull request #5831 from zeusoo001/f-sove-access-problem-fetch

fix(net): solve the problem of concurrent access to fetchBlockInfo object

Author: lvs007

framework/src/main/java/org/tron/core/net/service/fetchblock/FetchBlockService.java

@@ -71,9 +71,10 @@ public void fetchBlock(List<Sha256Hash> sha256HashList, PeerConnection peer) {
     sha256HashList.stream().filter(sha256Hash -> new BlockCapsule.BlockId(sha256Hash).getNum()
         == chainBaseManager.getHeadBlockNum() + 1)
         .findFirst().ifPresent(sha256Hash -> {
-          fetchBlockInfo = new FetchBlockInfo(sha256Hash, peer, System.currentTimeMillis());
+          long now = System.currentTimeMillis();
+          fetchBlockInfo = new FetchBlockInfo(sha256Hash, peer, now);
           logger.info("Set fetchBlockInfo, block: {}, peer: {}, time: {}", sha256Hash,
-              fetchBlockInfo.getPeer().getInetAddress(), fetchBlockInfo.getTime());
+              peer.getInetAddress(), now);
         });
   }