From f7c5a7a19eb8dc128284911bf1046b0f69a50a16 Mon Sep 17 00:00:00 2001
From: Kenneth Perry <thothonegan@gmail.com>
Date: Thu, 3 May 2018 17:21:56 -0500
Subject: [PATCH] routing/chainview/neutrino: error if we get a nil cfilter
 back (#1176)

---
 routing/chainview/neutrino.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/routing/chainview/neutrino.go b/routing/chainview/neutrino.go
index e464f2b19..6b98f598e 100644
--- a/routing/chainview/neutrino.go
+++ b/routing/chainview/neutrino.go
@@ -241,6 +241,10 @@ func (c *CfFilteredChainView) FilterBlock(blockHash *chainhash.Hash) (*FilteredB
 		return nil, err
 	}
 
+	if filter == nil {
+		return nil, fmt.Errorf("Unable to fetch filter")
+	}
+
 	// Before we can match the filter, we'll need to map each item in our
 	// chain filter to the representation that included in the compact
 	// filters.