From ddca8bcc4fc2df64be23be25214e9fe483a22dd7 Mon Sep 17 00:00:00 2001
From: Joe Bryan <joemfb@gmail.com>
Date: Thu, 11 Apr 2024 15:26:52 -0400
Subject: [PATCH] u3: avoid unnecessary refcount churn in melt

---
 pkg/noun/urth.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkg/noun/urth.c b/pkg/noun/urth.c
index 676f63539a..8ef99d457a 100644
--- a/pkg/noun/urth.c
+++ b/pkg/noun/urth.c
@@ -513,6 +513,10 @@ _traverse(u3_noun som, u3p(u3h_root) set_p)
   //
   if (u3_none != (hav = _get(som, set_p)))
   {
+    if ( som == hav ) {
+      return som;
+    }
+
     u3z(som);
     return u3k(hav);
   }