Fix a race condition inside command_timed_out() when printing log info

Release the lock after we don't need anymore access to the wait_entry
that was protected by the lock.
Note: We are keeping the lock right before restarting the Bluetooth
process, hence it doesn't matter we are holding it for a bit longer
than before.

Test: Code compilation
Change-Id: Id393a285fce9b9e28efcf0f55fcc32821c5a72b6