Rename set_banned -> add_banned

Author: tnull

lightning/src/routing/scoring.rs

@@ -412,7 +412,7 @@ impl<G: Deref<Target = NetworkGraph<L>>, L: Deref, T: Time> ProbabilisticScorerU
 
 	/// Marks the node with the given `node_id` as banned, i.e.,
 	/// it will be avoided during path finding.
-	pub fn set_banned(&mut self, node_id: &NodeId) {
+	pub fn add_banned(&mut self, node_id: &NodeId) {
 		self.banned_nodes.insert(*node_id);
 	}