privacy guard: Fix crash when uninstalling an app

 * Don't try to update the privacy guard flag while refreshing after an
   uninstall since the PM will throw an exception at us.

Change-Id: Idadb99fefc2861e871f6206b08c844dda742fa68
Merge branch 'cm-10.1' of https://github.com/CyanogenMod/android_packages_apps_Settings into cm-10.1