From 3a465c64b5dcc16f3114fb00af03500604115143 Mon Sep 17 00:00:00 2001
From: Olaoluwa Osuntokun <laolu32@gmail.com>
Date: Sat, 21 Jul 2018 19:49:08 -0700
Subject: [PATCH] channeldb: modify pruneGraphNodes to prune nodes if no edges
 exist

---
 channeldb/graph.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/channeldb/graph.go b/channeldb/graph.go
index 920193aa4..6ab7b35df 100644
--- a/channeldb/graph.go
+++ b/channeldb/graph.go
@@ -734,7 +734,11 @@ func (c *ChannelGraph) pruneGraphNodes(tx *bolt.Tx, nodes *bolt.Bucket,
 			numChansLeft++
 			return nil
 		})
-		if err != nil {
+
+		// If we're unable read the node, or no edges exist in the
+		// graph atm (so all the nodes are unconnected), then we'll
+		// just skip this node all together.
+		if err != nil && err != ErrGraphNoEdgesFound {
 			continue
 		}