Fixed infinite loop

- fixed infinite loop while building slider list, when more than one
screen was created

src/osd/windows/window.cpp

@@ -274,39 +274,15 @@ void windows_osd_interface::update_slider_list()
 {
 	for (win_window_info *window = win_window_list; window != nullptr; window = window->m_next)
 	{
+		// every created window uses the same renderer
 		if (window->m_renderer && window->m_renderer->sliders_dirty())
 		{
-			build_slider_list();
+			m_sliders = window->m_renderer->get_slider_list();
 			return;
 		}
 	}
 }
 
-void windows_osd_interface::build_slider_list()
-{
-	m_sliders = nullptr;
-	slider_state *curr = m_sliders;
-	for (win_window_info *info = win_window_list; info != nullptr; info = info->m_next)
-	{
-		slider_state *window_sliders = info->m_renderer->get_slider_list();
-		if (window_sliders != nullptr)
-		{
-			if (m_sliders == nullptr)
-			{
-				m_sliders = curr = window_sliders;
-			}
-			else
-			{
-				while (curr->next != nullptr)
-				{
-					curr = curr->next;
-				}
-				curr->next = window_sliders;
-			}
-		}
-	}
-}
-
 //============================================================
 //  winwindow_exit
 //  (main thread)

src/osd/windows/winmain.h

@@ -271,7 +271,6 @@ class windows_osd_interface : public osd_common_t
 
 private:
 	virtual void osd_exit() override;
-	void build_slider_list();
 	void update_slider_list();
 
 	windows_options &	m_options;