localgroups: fix null pointer access

Change-Id: I2a5805fc00903bc427e62a924b06e10a48d0ffe3
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>
Keyguard: Save Italy

Being low on battery is bad enough, don't make those Italians
suffer from additional UI crashes.

Change-Id: Idb905a27fc107433595e4376f88deebe1bc0c3d8