Fixed concurrent access network registration info

Fixed by adding synchronization block for every place
accessing network registration info in service state.

Bug: 131883293
Test: Manual
Merged-In: Ic10931b7fab998bfebe09d316a2d87886222dae3
Change-Id: Ic10931b7fab998bfebe09d316a2d87886222dae3
(cherry picked from commit 4c11809764d6d5c905cf4b8d5613b66ea91d9820)
1 file changed