--- a/src/ai/ai_gui.cpp	Mon May 19 14:14:33 2008 +0000
+++ b/src/ai/ai_gui.cpp	Mon May 19 15:13:58 2008 +0000
@@ -55,7 +55,7 @@
 	static PlayerID ai_debug_player;
 	int redraw_timer;
 
-	AIDebugWindow(const WindowDesc *desc, void *data, WindowNumber number) : Window(desc, data, number)
+	AIDebugWindow(const WindowDesc *desc, WindowNumber number) : Window(desc, number)
 	{
 		/* Disable the players who are not active or not an AI */
 		for (PlayerID i = PLAYER_FIRST; i < MAX_PLAYERS; i++) {
@@ -74,7 +74,7 @@
 	virtual void OnPaint()
 	{
 		/* Draw standard stuff */
-		DrawWindowWidgets(this);
+		this->DrawWidgets();
 
 		/* Check if the currently selected player is still active. */
 		if (ai_debug_player == INVALID_PLAYER || !GetPlayer(ai_debug_player)->is_active) {
@@ -246,8 +246,7 @@
 	WDP_AUTO, WDP_AUTO, 299, 228, 299, 228,
 	WC_PERFORMANCE_DETAIL, WC_NONE,
 	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET,
-	_ai_debug_widgets,
-	NULL
+	_ai_debug_widgets
 };
 
 void ShowAIDebugWindow()