Displays the URL of the author of the current comment, not linked.

function comment_author_url( $comment_ID = 0 ) {
	$comment    = get_comment( $comment_ID );
	$author_url = get_comment_author_url( $comment );

	/**
	 * Filters the comment author's URL for display.
	 *
	 * @since 1.2.0
	 * @since 4.1.0 The `$comment_ID` parameter was added.
	 *
	 * @param string $author_url The comment author's URL.
	 * @param string $comment_ID The comment ID as a numeric string.
	 */
	echo apply_filters( 'comment_url', $author_url, $comment->comment_ID );
}