Revert r30115 which was a breaking change for code which interacts with the return value of `get_metadata()` when no meta key is specified.

See #15030

Built from https://develop.svn.wordpress.org/trunk@30701


git-svn-id: http://core.svn.wordpress.org/trunk@30691 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/meta.php

@@ -493,10 +493,6 @@ function get_metadata($meta_type, $object_id, $meta_key = '', $single = false) {
 	}
 
 	if ( ! $meta_key ) {
-		foreach ( $meta_cache as &$meta_values ) {
-			$meta_values = array_map( 'maybe_unserialize', $meta_values );
-		}
-
 		return $meta_cache;
 	}
 

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.1-beta2-30700';
+$wp_version = '4.1-beta2-30701';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.