Bug in event monitoring

[derpmacos]

PKPowerKeyEventListener.m - (void)monitorPowerKey { ..

bug:
NSEventTypeSystemDefined is not a mask.
Instead use CGEventMask eventTypeMask = NX_SYSDEFINEDMASK and skip the loop adding masks for other event types.

suggestion:
CGEventTapCreate(...) would be better configured with kCGEventTapOptionListenOnly since it doesn't seem to be possible to block the power events.

[pkamb]

Is there a user-visible bug you are seeing?

I will look into that NX_SYSDEFINEDMASK; can't remember if we have tried to use that in the past.

Previous discussion about the event mask:
#5