room_to_display_x / y offset by 1 pixel

[jack27121]

look at this code, it should set the mouse position to where it already is, but what actually happens is that it gets offset by one pixel up and left

var dx = global.cam.room_to_display_x(global.cam.get_mouse_x() );
var dy = global.cam.room_to_display_y(global.cam.get_mouse_y() );
window_mouse_set(dx,dy);