Clear calling identity for isActiveSubId()

isActiveSubId() is called from within a binder
call from a carrier app, which means that the
subscription manager call fails. Simple fix to
clear the calling identity before invoking the
subscription manager.

Bug: 133524421
Test: cts - testUpdateAvailableNetworksWithCarrierPrivilege
Merged-In: Ia2ed5899ca24efb2588a944715b556cf9b2d9950
Change-Id: Ia2ed5899ca24efb2588a944715b556cf9b2d9950
1 file changed