Themes: Fix markup for theme name fallbacks.

Merge of [39807] to the 4.6 branch.
Built from https://develop.svn.wordpress.org/branches/4.6@39810


git-svn-id: http://core.svn.wordpress.org/branches/4.6@39748 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/class-wp-theme.php

@@ -720,8 +720,9 @@ final class WP_Theme implements ArrayAccess {
 	private function markup_header( $header, $value, $translate ) {
 		switch ( $header ) {
 			case 'Name' :
-				if ( empty( $value ) )
-					$value = $this->get_stylesheet();
+				if ( empty( $value ) ) {
+					$value = esc_html( $this->get_stylesheet() );
+				}
 				break;
 			case 'Description' :
 				$value = wptexturize( $value );

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.6.2-alpha-39797';
+$wp_version = '4.6.2-alpha-39810';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.