[1.6.2][frontend]error at trigger mass update

[fripper]

an error occurs trigger mass updating at frontend

1. go trigger list
configuration -> trigger
2. select some trigger(s)
enable check at left side of trigger(s)
3.press button [mass update]
4.non-selecting [priority/dependency]
5.press button [save]

when press [save], php undefined var access error was occured.
at "$_REQUEST['visible']"

fix patch [triggers.php] is below

[Alexei]

Thanks for reporting this. We will try to reproduce it shortly.