SystemUI: Fix potential NPE

Does already cause issues on some Halo ports to other ROMs.
Might not cause issues on PA (yet), but better safe than sorry.
Merge branch 'jb3' of github.com:CarbonDev/android_frameworks_base into jb3
Delete .goutputstream-VGJ9ZW
fix derp in floating notification launch
Merge branch 'jb3' of https://github.com/CarbonDev/android_frameworks_base into CB4.3