Fix segfault removing theme assets

Change-Id: I4827eb6e2b186547f1df6f9bbd048fb1e3a29890
Style previews [1/3]

Change-Id: Ifed0ef7829eb61492a39395e8140b99f01c5e6a3
Merge branch 'cm-11.0' of git://github.com/CyanogenMod/android_frameworks_base into cd-4.4