fix nodes data race

plugins/analysis/webinterface/recordedevents/recorded_events.go

@@ -76,6 +76,9 @@ func Configure(plugin *node.Plugin) {
 }
 
 func Replay(handlers *types.EventHandlers) {
+	lock.Lock()
+	defer lock.Unlock()
+
 	for nodeId, online := range nodes {
 		handlers.AddNode(nodeId)
 		if online {
@@ -84,8 +87,7 @@ func Replay(handlers *types.EventHandlers) {
 			handlers.NodeOffline(nodeId)
 		}
 	}
-	lock.Lock()
-	defer lock.Unlock()
+
 	for sourceId, targetMap := range links {
 		for targetId := range targetMap {
 			handlers.ConnectNodes(sourceId, targetId)