When I used set_spatial_filter_rect to filter features, no results were returned. #708

layer.set_spatial_filter_rect(minx, miny, maxx, maxy);
println!("1. feature count : {}", layer.feature_count());
println!("2. feature count : {}", layer.features().count());

unsafe {
        let c_l = layer.c_layer();
        OGR_L_SetSpatialFilterRect(c_l, minx, miny, maxx, maxy);
        while let Some(x) = {
            let feat_ptr = gdal_sys::OGR_L_GetNextFeature(c_l);
            if feat_ptr.is_null() {
                None
            } else {
                Some(feat_ptr)
            }
        } {
            let fid = gdal_sys::OGR_F_GetFID(x);
            let f = layer.feature(fid as u64).unwrap();
            println!("fid = {:?} name = {:?}", f.fid(), f.field(0));

            gdal_sys::OGR_F_Destroy(x);
        }
    }