Fix #21 - Typo in get_metadata() function of apc and memcached cache drivers.
diff --git a/system/libraries/Cache/drivers/Cache_memcached.php b/system/libraries/Cache/drivers/Cache_memcached.php
index a7efdc5..5f5a315 100644
--- a/system/libraries/Cache/drivers/Cache_memcached.php
+++ b/system/libraries/Cache/drivers/Cache_memcached.php
@@ -122,7 +122,7 @@
 			return FALSE;
 		}
 
-		list($value, $time, $ttl) = $stored;
+		list($data, $time, $ttl) = $stored;
 
 		return array(
 			'expire'	=> $time + $ttl,