(svn r27167) -Fix: [SDL, Windows] Right-mouse-button scrolling scrolled/jumped way to far, when OpenTTD lagged during mouse event processing.

src/gfx_type.h

@@ -138,6 +138,12 @@ struct CursorVars {
 	bool in_window;  ///< mouse inside this window, determines drawing logic
 
 	bool vehchain;   ///< vehicle chain is dragged
+
+	bool UpdateCursorPosition(int x, int y, bool queued_warp);
+
+private:
+	bool queued_warp;
+	Point last_position;
 };
 
 /** Data about how and where to blit pixels. */