Fix usage of the wrong lock in PackageManager (mLock instead of mSettings)

Bug: 162757028
Bug: 166537195
Test: compile & verify basic functions working
Change-Id: Ie822d8f2267dcb8ce382e91ab5de365a4e0ce19f
Merged-In: Ie822d8f2267dcb8ce382e91ab5de365a4e0ce19f
(cherry picked from commit 1690689bc44d82d57e9ea12d44ef32d18dcb1326)
1 file changed