Merge pull request #1017 from burakerdem/patch-1

Filesystem cache metadata function return correct TTL now.
diff --git a/system/libraries/Cache/drivers/Cache_file.php b/system/libraries/Cache/drivers/Cache_file.php
index 5170de8..1b57c89 100644
--- a/system/libraries/Cache/drivers/Cache_file.php
+++ b/system/libraries/Cache/drivers/Cache_file.php
@@ -171,13 +171,13 @@
 		{
 			$mtime = filemtime($this->_cache_path.$id);
 
-			if ( ! isset($data['data']['ttl']))
+			if ( ! isset($data['ttl']))
 			{
 				return FALSE;
 			}
 
 			return array(
-				'expire' => $mtime + $data['data']['ttl'],
+				'expire' => $mtime + $data['ttl'],
 				'mtime'	 => $mtime
 			);
 		}
@@ -202,4 +202,4 @@
 }
 
 /* End of file Cache_file.php */
-/* Location: ./system/libraries/Cache/drivers/Cache_file.php */
\ No newline at end of file
+/* Location: ./system/libraries/Cache/drivers/Cache_file.php */