Coding Standards: Remove redundant $cpage checks from get_comment_link().

These checks would always be `true`, as `$cpage` is checked for a truthy value before entering the code block.

Includes removing a duplicate `user_trailingslashit()` call, as there is a subsequent call a few lines below.

Follow-up to [34735].

Props justlevine.
See #63268.

git-svn-id: https://develop.svn.wordpress.org/trunk@60408 602fd350-edb4-49c9-b593-d223f7449a82

Author: SergeyBiryukov

src/wp-includes/comment-template.php

@@ -834,12 +834,8 @@ function get_comment_link( $comment = null, $args = array() ) {
 
 	if ( $cpage && get_option( 'page_comments' ) ) {
 		if ( $wp_rewrite->using_permalinks() ) {
-			if ( $cpage ) {
-				$comment_link = trailingslashit( $comment_link ) . $wp_rewrite->comments_pagination_base . '-' . $cpage;
-			}
-
-			$comment_link = user_trailingslashit( $comment_link, 'comment' );
-		} elseif ( $cpage ) {
+			$comment_link = trailingslashit( $comment_link ) . $wp_rewrite->comments_pagination_base . '-' . $cpage;
+		} else {
 			$comment_link = add_query_arg( 'cpage', $cpage, $comment_link );
 		}
 	}