Merge branch '3.1-stable' into develop

Conflicts resolved:
	.travis.yml
	system/core/CodeIgniter.php
	system/database/drivers/oci8/oci8_forge.php
	system/database/drivers/pdo/subdrivers/pdo_oci_forge.php
	system/helpers/path_helper.php
	system/libraries/Email.php
	user_guide_src/source/changelog.rst
	user_guide_src/source/conf.py
	user_guide_src/source/contributing/index.rst
	user_guide_src/source/general/requirements.rst
	user_guide_src/source/general/styleguide.rst
	user_guide_src/source/installation/downloads.rst
	user_guide_src/source/installation/upgrade_310.rst
	user_guide_src/source/installation/upgrading.rst

1 files changed, 1 insertions, 1 deletions

diff --git a/system/libraries/Session/drivers/Session_redis_driver.php b/system/libraries/Session/drivers/Session_redis_driver.php
index d3a265958..592f1ff6c 100644
--- a/system/libraries/Session/drivers/Session_redis_driver.php
+++ b/system/libraries/Session/drivers/Session_redis_driver.php
@@ -279,7 +279,7 @@ class CI_Session_redis_driver extends CI_Session_driver implements SessionHandle
 				if ($this->_redis->ping() === '+PONG')
 				{
 					$this->_release_lock();
-					if ($this->_redis->close() === $this->_failure)
+					if ($this->_redis->close() === FALSE)
 					{
 						return $this->_fail();
 					}