Change: Use power-of-2 scaling for some dimensions in GUI.

These are related to drawing sprites that are normally drawn on the
landscape, and should therefore still follow power-of-2 scaling to fit
correctly.

src/build_vehicle_gui.cpp

@@ -977,7 +977,7 @@ void DrawEngineList(VehicleType type, const Rect &r, const GUIEngineList *eng_li
 
 	Rect ir      = r.WithHeight(step_size).Shrink(WidgetDimensions::scaled.matrix);
 	int sprite_x = ir.WithWidth(sprite_width, rtl).left + sprite_left;
-	int sprite_y_offset = ScaleGUITrad(sprite_y_offsets[type]) + ir.Height() / 2;
+	int sprite_y_offset = ScaleSpriteTrad(sprite_y_offsets[type]) + ir.Height() / 2;
 
 	Dimension replace_icon = {0, 0};
 	int count_width = 0;