Add a missing DocBlock for the core utility function `_get_cron_lock()`.

Props mordauk, valendesigns.
Fixes #31646.

Built from https://develop.svn.wordpress.org/trunk@31804


git-svn-id: http://core.svn.wordpress.org/trunk@31786 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-cron.php

@@ -26,7 +26,16 @@ if ( !defined('ABSPATH') ) {
 	require_once( dirname( __FILE__ ) . '/wp-load.php' );
 }
 
-// Uncached doing_cron transient fetch
+/**
+ * Retrieves the cron lock.
+ *
+ * Returns the uncached `doing_cron` transient.
+ *
+ * @ignore
+ * @since 3.3.0
+ *
+ * @return string|false Value of the `doing_cron` transient, 0|false otherwise.
+ */
 function _get_cron_lock() {
 	global $wpdb;
 

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.2-beta1-31803';
+$wp_version = '4.2-beta1-31804';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.