From 82d2734d3f8b5b7576c24735923361cefba27f94 Mon Sep 17 00:00:00 2001
From: Herbert Wolverson <herberticus@gmail.com>
Date: Tue, 9 Jul 2024 20:42:51 -0500
Subject: [PATCH] Fix for empty tree.

---
 src/rust/lqos_config/src/network_json.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/rust/lqos_config/src/network_json.rs b/src/rust/lqos_config/src/network_json.rs
index 8924eaa9..f5cd2635 100644
--- a/src/rust/lqos_config/src/network_json.rs
+++ b/src/rust/lqos_config/src/network_json.rs
@@ -157,7 +157,9 @@ impl NetworkJson {
     /// have been made to the clone, and the clone is then copied back
     /// into the main structure.
     pub fn finish_update_cycle(&mut self, counting: NetworkJsonCounting) {
-        self.nodes = counting.nodes;
+        if !counting.nodes.is_empty() {
+            self.nodes = counting.nodes;
+        }
     }
 }