graph/db: thread context through FetchNodeFeatures

routing/graph.go

@@ -1,6 +1,7 @@
 package routing
 
 import (
+	"context"
 	"fmt"
 
 	"github.com/btcsuite/btcd/btcutil"
@@ -19,7 +20,8 @@ type Graph interface {
 		reset func()) error
 
 	// FetchNodeFeatures returns the features of the given node.
-	FetchNodeFeatures(nodePub route.Vertex) (*lnwire.FeatureVector, error)
+	FetchNodeFeatures(ctx context.Context,
+		nodePub route.Vertex) (*lnwire.FeatureVector, error)
 }
 
 // GraphSessionFactory can be used to gain access to a graphdb.NodeTraverser