Call getPackageInfo() with cleared calling identity in ensureSystemPackageName().

Otherwise non-primary users might get a SecurityException.

Bug: 145981139
Bug: 148763415
Test: manual
Change-Id: I5883e296a0d753e43075cbf0abc5dc4da91e2fca
(cherry picked from commit e693b797bcf0be38f0fc9d878bb5278eacf8b4b1)
1 file changed