Replace empty table header with a table cell.

props afercia.
fixes #33047.
Built from https://develop.svn.wordpress.org/trunk@33456


git-svn-id: http://core.svn.wordpress.org/trunk@33423 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/themes.php

@@ -280,7 +280,7 @@ $can_delete = current_user_can( 'delete_themes' );
 		<th><?php _ex('Name', 'theme name'); ?></th>
 		<th><?php _e('Description'); ?></th>
 		<?php if ( $can_delete ) { ?>
-			<th></th>
+			<td></td>
 		<?php } ?>
 		</tr>
 	</tr>

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.3-beta4-33455';
+$wp_version = '4.3-beta4-33456';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.