order_by('','random') fails

[eluser]phazei[/eluser]
At least in CI1.7.0 when using order_by('','random') it leaves an extra `(tick) in the call which breaks it. I ended up just doing a manual query();

[eluser]Skuja[/eluser]
this bug was fixed in 1.7.1

Bug fixes for 1.7.1

* Database
o Fixed a bug when doing 'random' on order_by() (#5706).

[eluser]jdfwarrior[/eluser]
agreed, works in 1.7.1