Compatibility with PHp5.2 version - Call By reference in question.install file

Just tested this dev version of module and got:-

Warning: Call-time pass-by-reference has been deprecated in E:\mysite\indiapoly\sites\all\modules\question\question.install on line 38

Warning: Call-time pass-by-reference has been deprecated in E:\mysite\indiapoly\sites\all\modules\question\question.install on line 39

Warning: Call-time pass-by-reference has been deprecated in E:\mysite\indiapoly\sites\all\modules\question\question.install on line 45

Found:-Line 45 question.install

db_drop_primary_key(&$ret, 'question_queue');

Should be:-

db_drop_primary_key($ret, 'question_queue');

And found:-Line 38,39 question.install

db_add_primary_key(&$ret, 'question_node', array('nid'));
 db_add_primary_key(&$ret, 'question_queue', array('qid'));

Should be:-

db_add_primary_key($ret, 'question_node', array('nid'));
  db_add_primary_key($ret, 'question_queue', array('qid'));