Replaced `==` with `===` and `!=` with `!==` in /system/libraries
diff --git a/system/libraries/Log.php b/system/libraries/Log.php
index 51ce43d..baac801 100644
--- a/system/libraries/Log.php
+++ b/system/libraries/Log.php
@@ -94,7 +94,7 @@
 	{
 		$config =& get_config();
 
-		$this->_log_path = ($config['log_path'] != '') ? $config['log_path'] : APPPATH.'logs/';
+		$this->_log_path = ($config['log_path'] !== '') ? $config['log_path'] : APPPATH.'logs/';
 
 		if ( ! is_dir($this->_log_path) OR ! is_really_writable($this->_log_path))
 		{
@@ -111,7 +111,7 @@
 			$this->_threshold_array = array_flip($config['log_threshold']);
 		}
 
-		if ($config['log_date_format'] != '')
+		if ($config['log_date_format'] !== '')
 		{
 			$this->_date_fmt = $config['log_date_format'];
 		}