Shared state modified in two threads without synchronization

mConfigFromCarrierApp array is the shared state of CarrierConfigLoader.
It is modified in both IPC thread and the handler thread without
synchronization. This may cause data race problem.

Move the modification of mConfigFromCarrierApp into the handler thread
on which all shared states are designed to confine.

Bug: 181979319
Test: make
Change-Id: I6777af2c4798f6c98403b7e5ec3af47568cce916
1 file changed