Base: fix ClockView ActiveDisplay

why no body report this bug?

this happen since AD merger into omnirom for the first time
i found this bug after using 24 time format LOL

Change-Id: I85be84914cc8210d9b0612994a4c25a5c6bfdeb6
Merge remote-tracking branch 'omni/android-4.4' into android-4.4