f - Fix check_commits

Author: jkczyz

lightning/src/routing/scorer.rs

@@ -47,6 +47,8 @@ use routing;
 use routing::network_graph::NodeId;
 use routing::router::RouteHop;
 
+use prelude::*;
+
 /// [`routing::Score`] implementation that provides reasonable default behavior.
 ///
 /// Used to apply a fixed penalty to each channel, thus avoiding long paths when shorter paths with