Correct the return value doc block for `get_theme_support()`.

See #30224.

Built from https://develop.svn.wordpress.org/trunk@30188


git-svn-id: http://core.svn.wordpress.org/trunk@30188 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/theme.php

@@ -1668,7 +1668,7 @@ add_action( 'wp_loaded', '_custom_header_background_just_in_time' );
  * @since 3.1.0
  *
  * @param string $feature the feature to check
- * @return array The array of extra arguments
+ * @return mixed The array of extra arguments or value of registered featured.
  */
 function get_theme_support( $feature ) {
 	global $_wp_theme_features;

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.1-alpha-30187';
+$wp_version = '4.1-alpha-30188';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.