From 15cf1e16b232f6c1d9c9bbd7166502db01bb581c Mon Sep 17 00:00:00 2001
From: Matthias Radestock <matthias.radestock@gmail.com>
Date: Fri, 29 Jul 2016 18:56:06 +0100
Subject: [PATCH] micro optimisation: avoid some unnecessary copying

---
 report/table.go    | 5 +++--
 report/topology.go | 5 +++--
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/report/table.go b/report/table.go
index 08d3b88f9..10d4aa40c 100644
--- a/report/table.go
+++ b/report/table.go
@@ -163,9 +163,10 @@ func (t TableTemplates) Merge(other TableTemplates) TableTemplates {
 	}
 	for k, v := range other {
 		if existing, ok := result[k]; ok {
-			v = v.Merge(existing)
+			result[k] = v.Merge(existing)
+		} else {
+			result[k] = v
 		}
-		result[k] = v
 	}
 	return result
 }
diff --git a/report/topology.go b/report/topology.go
index 5fbe93a4a..f64be7122 100644
--- a/report/topology.go
+++ b/report/topology.go
@@ -181,9 +181,10 @@ func (n Nodes) Merge(other Nodes) Nodes {
 	}
 	for k, v := range other {
 		if n, ok := cp[k]; ok { // don't overwrite
-			v = v.Merge(n)
+			cp[k] = v.Merge(n)
+		} else {
+			cp[k] = v
 		}
-		cp[k] = v
 	}
 	return cp
 }