Replace duplicated RET_KILL code with existing function.

BUG=None
TEST=syscall_filter_unittest

Change-Id: I810b99b85cb039db8bd313ca08119d22ff2554ba
Reviewed-on: https://gerrit.chromium.org/gerrit/25277
Tested-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Commit-Ready: Jorge Lucangeli Obes <jorgelo@chromium.org>
1 file changed