libcontainer: handle EINTR from minijail_wait

minijail_wait will pass EINTR up if the call to waitpid is interrupted.
Handle that return in libcontainer.

BUG=none
TEST=start and stop containers, didn't simulate EINTER being returned.

Change-Id: I5c20e9e225baee5794c6683fc2832b1357ad1a95
Signed-off-by: Dylan Reid <dgreid@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/340373
Reviewed-by: Ricky Zhou <rickyz@chromium.org>
1 file changed