Fix a logical error from last commit
diff --git a/system/libraries/Session/drivers/Session_database_driver.php b/system/libraries/Session/drivers/Session_database_driver.php
index da03312..317bd7d 100644
--- a/system/libraries/Session/drivers/Session_database_driver.php
+++ b/system/libraries/Session/drivers/Session_database_driver.php
@@ -163,7 +163,7 @@
 				$this->_db->where('ip_address', $_SERVER['REMOTE_ADDR']);
 			}
 
-			if ( ! ($result = $this->_db->get()) OR $result->row() === NULL)
+			if ( ! ($result = $this->_db->get()) OR ($result = $result->row()) === NULL)
 			{
 				// PHP7 will reuse the same SessionHandler object after
 				// ID regeneration, so we need to explicitly set this to