titlemap - cameraref subsector

apparently it recalculates without this line, so it should give a tiny performance boost?

src/f_finale.c

@@ -1607,6 +1607,7 @@ void F_TitleScreenTicker(boolean run)
 			camera.z = cameraref->z;
 			camera.angle = cameraref->angle;
 			camera.aiming = cameraref->cusval;
+			camera.subsector = cameraref->subsector;
 		}
 		else
 		{