Fix return statement in CanvasItem::get_global_transform_with_canvas
Fix return statement in CanvasItem::get_global_transform_with_canvas

Thanks to @susnux for the report and patch in #5446.

pixelpicosean/my-godot-2.1,pixelpicosean/my-godot-2.1,pixelpicosean/my-godot-2.1,pixelpicosean/my-godot-2.1,pixelpicosean/my-godot-2.1