Merge "Use _exit instead of exit for the system exit."
am: 30ad1c2e8b

* commit '30ad1c2e8b43227c28a6870c8c9eb765b80b0b33':
  Use _exit instead of exit for the system exit.

Change-Id: I5680b2521e505f0fb16d9cd395619cee14c41549