Improve the `@param` docs for `trackback_response()` and `validate_another_blog_signup()`.

See #30224.

Built from https://develop.svn.wordpress.org/trunk@30662


git-svn-id: http://core.svn.wordpress.org/trunk@30652 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.1-beta2-30661';
+$wp_version = '4.1-beta2-30662';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.

wp-signup.php

@@ -299,13 +299,15 @@ function signup_another_blog( $blogname = '', $blog_title = '', $errors = '' ) {
  *
  * @since MU
  *
- * @return bool True if blog signup was validated, false if error
+ * @return null|boolean True if blog signup was validated, false if error.
+ *                      The function halts all execution if the user is not logged in.
  */
 function validate_another_blog_signup() {
 	global $wpdb, $blogname, $blog_title, $errors, $domain, $path;
 	$current_user = wp_get_current_user();
-	if ( !is_user_logged_in() )
+	if ( ! is_user_logged_in() ) {
 		die();
+	}
 
 	$result = validate_blog_form();
 

wp-trackback.php

@@ -20,8 +20,8 @@ if (empty($wp)) {
  *
  * @since 0.71
  *
- * @param int|bool $error         Whether there was an error.
- *                                Default '0'. Accepts '0' or '1'.
+ * @param mixed  $error         Whether there was an error.
+ *                              Default '0'. Accepts '0' or '1', true or false.
  * @param string $error_message Error message if an error occurred.
  */
 function trackback_response($error = 0, $error_message = '') {