Memory Leak Fixed

Have to free the mesh generator after we process our mesh.

demo/scenes/player/player_controller.tscn

@@ -50,6 +50,7 @@ offset_right = 711.0
 offset_bottom = 543.0
 grow_horizontal = 1
 grow_vertical = 1
+enabled = false
 initial_node_to_watch = NodePath("../StateChart")
 
 [node name="PlaceholderMesh" type="MeshInstance3D" parent="."]
@@ -80,6 +81,7 @@ script = ExtResource("4_0l0yx")
 player = NodePath("../..")
 
 [node name="InteractionRaycast" type="RayCast3D" parent="CameraController/Camera3D"]
+enabled = false
 target_position = Vector3(0, 0, -3)
 debug_shape_custom_color = Color(0, 1, 0, 1)
 script = ExtResource("4_cv1cy")