MAS Videos - Store custom user meta values during user registration ( First Name & Last Name )

functions.php

if ( ! function_exists( 'masvideos_save_custom_user_meta' ) ) {
    function masvideos_save_custom_user_meta( $user_id ) {
        $nonce_value = isset( $_POST['_wpnonce'] ) ? $_POST['_wpnonce'] : '';
        $nonce_value = isset( $_POST['masvideos-register-nonce'] ) ? $_POST['masvideos-register-nonce'] : $nonce_value;
        if ( ! empty( $_POST['register'] ) && wp_verify_nonce( $nonce_value, 'masvideos-register' ) ) {
            if ( ! empty( $_POST['first_name'] ) ) {
                update_user_meta( $user_id, 'first_name', trim( $_POST['first_name'] ) );
            }

            if ( ! empty( $_POST['last_name'] ) ) {
                update_user_meta( $user_id, 'last_name', trim( $_POST['last_name'] ) );
            }
        }
    }
}
add_action( 'masvideos_created_user', 'masvideos_save_custom_user_meta' );