Merge pull request #3202 from rougin/patch-1

Fixed typo error
diff --git a/system/database/DB_query_builder.php b/system/database/DB_query_builder.php
index 69dc8c2..f11f846 100644
--- a/system/database/DB_query_builder.php
+++ b/system/database/DB_query_builder.php
@@ -635,7 +635,7 @@
 			$key = array($key => $value);
 		}
 
-		// If the escape value was not set will will base it on the global setting
+		// If the escape value was not set will base it on the global setting
 		is_bool($escape) OR $escape = $this->_protect_identifiers;
 
 		foreach ($key as $k => $v)