Fix compilation issues after rebasing against master

Author: warriormaster12

editor/plugins/audio_graph_editor_plugin.cpp

@@ -1805,7 +1805,7 @@ void AudioGraphEditorPlugin::disconnect_nodes(int p_from_node, int p_from_port,
 	if (audio_graph_editor->audio_graph) {
 		graph->disconnect_node(itos(p_from_node), p_from_port, itos(p_to_node), p_to_port);
 
-		for (const List<AudioStreamGraph::Connection>::Element *E = connections.front(); E; E = E->next()) {
+		for (List<AudioStreamGraph::Connection>::Element *E = connections.front(); E;) {
 			if (E->get().from_node == p_from_node && E->get().from_port == p_from_port && E->get().to_node == p_to_node && E->get().to_port == p_to_port) {
 				connections.erase(E);
 				break;

editor/plugins/audio_graph_editor_plugin.h

@@ -335,7 +335,6 @@ class AudioGraphEditorPlugin : public EditorPlugin {
 	void set_connections(const List<AudioStreamGraph::Connection> &p_connections);
 	void set_input_port_default_value(int p_node_id, int p_port_id, const Variant &p_value);
 
-	virtual String get_name() const override { return "AudioGraph"; }
 	virtual void edit(Object *p_object) override;
 	virtual bool handles(Object *p_object) const override;
 	virtual void make_visible(bool p_visible) override;

scene/resources/audio_stream_graph.cpp

@@ -105,7 +105,7 @@ Error AudioStreamGraph::connect_nodes(int p_from_node, int p_from_port, int p_to
 }
 
 void AudioStreamGraph::disconnect_nodes(int p_from_node, int p_from_port, int p_to_node, int p_to_port) {
-	for (const List<Connection>::Element *E = connections.front(); E; E = E->next()) {
+	for (List<Connection>::Element *E = connections.front(); E;) {
 		if (E->get().from_node == p_from_node && E->get().from_port == p_from_port && E->get().to_node == p_to_node && E->get().to_port == p_to_port) {
 			connections.erase(E);
 			nodes[p_from_node].next_connected_nodes.erase(p_to_node);