From eb228eb615e6c2ce02acfaf9a385a6b690be6888 Mon Sep 17 00:00:00 2001
From: Jeromy <jeromyj@gmail.com>
Date: Sat, 14 Mar 2015 15:05:48 -0700
Subject: [PATCH] remove addCloser

---
 core/core.go | 23 ++++++++++++-----------
 1 file changed, 12 insertions(+), 11 deletions(-)

diff --git a/core/core.go b/core/core.go
index 5d5eb3df4..eba3c4843 100644
--- a/core/core.go
+++ b/core/core.go
@@ -295,24 +295,25 @@ func (n *IpfsNode) teardown() error {
 		n.Exchange,
 		n.Repo,
 	}
-	addCloser := func(c io.Closer) { // use when field may be nil
-		if c != nil {
-			closers = append(closers, c)
-		}
-	}
 
 	if n.Blocks != nil {
-		addCloser(n.Blocks)
+		closers = append(closers, n.Blocks)
 	}
 	if n.IpnsFs != nil {
-		addCloser(n.IpnsFs)
+		closers = append(closers, n.IpnsFs)
 	}
 
-	addCloser(n.Bootstrapper)
-	if dht, ok := n.Routing.(*dht.IpfsDHT); ok {
-		addCloser(dht)
+	if n.Bootstrapper != nil {
+		closers = append(closers, n.Bootstrapper)
+	}
+
+	if dht, ok := n.Routing.(*dht.IpfsDHT); ok {
+		closers = append(closers, dht)
+	}
+
+	if n.PeerHost != nil {
+		closers = append(closers, n.PeerHost)
 	}
-	addCloser(n.PeerHost)
 
 	var errs []error
 	for _, closer := range closers {