Comments: Restore a removed fieldset legend after [44466].

In the Edit Comment page:
- moves the "Author" `h2` heading out of the form fieldset
- removes an unnecessary `<span>` element
- adds a visually hidden legend element to the fieldset
- uses an existing string "Comment Author"

Fixes #43586.

Built from https://develop.svn.wordpress.org/trunk@44712


git-svn-id: http://core.svn.wordpress.org/trunk@44543 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/edit-form-comment.php

@@ -40,10 +40,9 @@ if ( 'approved' === wp_get_comment_status( $comment ) && $comment->comment_post_
 <?php endif; ?>
 <div id="namediv" class="stuffbox">
 <div class="inside">
+<h2 class="edit-comment-author"><?php _e( 'Author' ); ?></h2>
 <fieldset>
-<h2 class="edit-comment-author">
+<legend class="screen-reader-text"><?php _e( 'Comment Author' ); ?></legend>
-	<span><?php _e( 'Author' ); ?></span>
-</h2>
 <table class="form-table editcomment">
 <tbody>
 <tr>

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.1-beta2-44711';
+$wp_version = '5.1-beta2-44712';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.