multi: let ForEachNodeChannel take a reset param

rpcserver.go

@@ -7048,7 +7048,8 @@ func (r *rpcServer) GetNodeInfo(ctx context.Context,
 		channels      []*lnrpc.ChannelEdge
 	)
 
-	err = graph.ForEachNodeChannel(ctx, node.PubKeyBytes,
+	err = graph.ForEachNodeChannel(
+		ctx, node.PubKeyBytes,
 		func(edge *models.ChannelEdgeInfo,
 			c1, c2 *models.ChannelEdgePolicy) error {
 
@@ -7074,6 +7075,10 @@ func (r *rpcServer) GetNodeInfo(ctx context.Context,
 			}
 
 			return nil
+		}, func() {
+			numChannels = 0
+			totalCapacity = 0
+			channels = nil
 		},
 	)
 	if err != nil {
@@ -7730,7 +7735,8 @@ func (r *rpcServer) FeeReport(ctx context.Context,
 	}
 
 	var feeReports []*lnrpc.ChannelFeeReport
-	err = channelGraph.ForEachNodeChannel(ctx, selfNode.PubKeyBytes,
+	err = channelGraph.ForEachNodeChannel(
+		ctx, selfNode.PubKeyBytes,
 		func(chanInfo *models.ChannelEdgeInfo,
 			edgePolicy, _ *models.ChannelEdgePolicy) error {
 
@@ -7768,6 +7774,8 @@ func (r *rpcServer) FeeReport(ctx context.Context,
 			})
 
 			return nil
+		}, func() {
+			feeReports = nil
 		},
 	)
 	if err != nil {