removed null handling code in db::query until further confirmation of bug is received.

system/db.php

@@ -55,16 +55,9 @@ class DB {
 		$bindings = array_values($bindings);
 
 		foreach ($bindings as $key => &$binding)
-		{
-			if (is_null($binding))
-			{
-				$query->bindValue($key + 1, null, \PDO::PARAM_INT);
-			}
-			else
 		{
 			$query->bindParam($key + 1, $binding);
 		}
-		}
 
 		$result = $query->execute();