In `WP_Comment_Query`, only allow `__call()` to run against `->get_search_sql()`.

See #30891.

Built from https://develop.svn.wordpress.org/trunk@31150


git-svn-id: http://core.svn.wordpress.org/trunk@31131 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/comment.php

@@ -285,8 +285,11 @@ class WP_Comment_Query {
 	 * @return mixed|bool Return value of the callback, false otherwise.
 	 */
 	public function __call( $name, $arguments ) {
+		if ( 'get_search_sql' === $name ) {
 			return call_user_func_array( array( $this, $name ), $arguments );
 		}
+		return false;
+	}
 
 	/**
 	 * Execute the query

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.2-alpha-31149';
+$wp_version = '4.2-alpha-31150';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.