Fixed compile error after rebase

Author: neumatho

Source/Clients/NostalgicPlayer/Bases/WindowFormBase2.cs

@@ -6,7 +6,7 @@
 using System.Drawing;
 using System.Windows.Forms;
 using Polycode.NostalgicPlayer.Client.GuiPlayer.Containers.Settings;
-using Polycode.NostalgicPlayer.Client.GuiPlayer.MainWindow;
+using Polycode.NostalgicPlayer.Client.GuiPlayer.Windows.MainWindow;
 using Polycode.NostalgicPlayer.Controls.Forms;
 using Polycode.NostalgicPlayer.Controls.Theme;
 using Polycode.NostalgicPlayer.Controls.Theme.Purple;