[ci skip] A tiny optimization
diff --git a/system/libraries/Session/Session.php b/system/libraries/Session/Session.php
index df6225e..a5c9737 100644
--- a/system/libraries/Session/Session.php
+++ b/system/libraries/Session/Session.php
@@ -125,10 +125,11 @@
 
 		if ( ! class_exists('CI_Session_driver', FALSE))
 		{
-			if (file_exists($file_path = APPPATH.'libraries/Session/Session_driver.php') OR file_exists($file_path = BASEPATH.'libraries/Session/Session_driver.php'))
-			{
-				require_once($file_path);
-			}
+			require_once(
+				file_exists(APPPATH.'libraries/Session/Session_driver.php')
+					? APPPATH.'libraries/Session/Session_driver.php'
+					: BASEPATH.'libraries/Session/Session_driver.php'
+			);
 
 			if (file_exists($file_path = APPPATH.'libraries/Session/'.$prefix.'Session_driver.php'))
 			{
@@ -137,7 +138,6 @@
 		}
 
 		$class = 'Session_'.$driver.'_driver';
-
 		if ( ! class_exists('CI_'.$class, FALSE))
 		{
 			if (file_exists($file_path = APPPATH.'libraries/Session/drivers/'.$class.'.php') OR file_exists($file_path = BASEPATH.'libraries/Session/drivers/'.$class.'.php'))