Docs: Add a missing access modifier to the declaration for the `WP_User::__unset()` magic method, introduced in [34380].

Also adds missing documentation to the DocBlock.

Fixes #20043.

Built from https://develop.svn.wordpress.org/trunk@34390


git-svn-id: http://core.svn.wordpress.org/trunk@34354 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/class-wp-user.php

@@ -335,11 +335,14 @@ class WP_User {
 	}
 
 	/**
-	 * Magic method for unsetting a certain custom field
+	 * Magic method for unsetting a certain custom field.
 	 *
 	 * @since 4.4.0
+	 * @access public
+	 *
+	 * @param string $key User meta key to unset.
 	 */
-	function __unset( $key ) {
+	public function __unset( $key ) {
 		if ( 'id' == $key ) {
 			_deprecated_argument( 'WP_User->id', '2.1', __( 'Use <code>WP_User->ID</code> instead.' ) );
 			$key = 'ID';

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.4-alpha-34389';
+$wp_version = '4.4-alpha-34390';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.