From c17451ca73caac131fe074c74a5006838a6aeec2 Mon Sep 17 00:00:00 2001
From: Michael Vines <mvines@gmail.com>
Date: Tue, 29 Jun 2021 09:29:28 -0700
Subject: [PATCH] Acquire instance read lock once

---
 gossip/src/cluster_info.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gossip/src/cluster_info.rs b/gossip/src/cluster_info.rs
index 105994e63..6e68c53c3 100644
--- a/gossip/src/cluster_info.rs
+++ b/gossip/src/cluster_info.rs
@@ -2490,11 +2490,12 @@ impl ClusterInfo {
                     .collect()
             })
         };
+
         // Check if there is a duplicate instance of
         // this node with more recent timestamp.
+        let instance = self.instance.read().unwrap();
         let check_duplicate_instance = |values: &[CrdsValue]| {
             if should_check_duplicate_instance {
-                let instance = self.instance.read().unwrap();
                 for value in values {
                     if instance.check_duplicate(value) {
                         return Err(GossipError::DuplicateNodeInstance);