Bug on WooCommerce setup with fix

Hi,
I had an issue on WooCommerce first setup and I solved with thoose line of code at line 759 of wpGoogleMaps.php:

function wpgmza_plugin_row_js(){
    $current_page = get_current_screen();

    /**
     * Setup page of WooCommerce
     * wp-admin/index.php?page=wc-setup
     */
    if ( ! $current_page ) {
        return;
    }

    if ( $current_page->base == 'plugins' ) {
        wp_register_script( 'wpgmza_plugin_row_js', WPGMAPS_DIR.'js/wpgmaps_plugin_row.js', array( 'jquery-ui-core' ) );
        wp_enqueue_script( 'wpgmza_plugin_row_js' );
        wp_localize_script( 'wpgmza_plugin_row_js', 'wpgmza_sub_nonce', wp_create_nonce("wpgmza_subscribe") );
    }
}