Fix OOB read in dhcpcd.

Should have done this sooner, but hey, late is better than never.

Based on https://googleplex-android-review.git.corp.google.com/#/c/588010/.

BUG=chromium:433078
TEST=Deploy to Chromebook, connect to network, get DHCP lease.

Change-Id: I951788f8494b57328716e0246e984c1788085e1b
Reviewed-on: https://chromium-review.googlesource.com/242880
Tested-by: Jorge Lucangeli Obes <[email protected]>
Reviewed-by: Paul Stewart <[email protected]>
Reviewed-by: Kees Cook <[email protected]>
Commit-Queue: Jorge Lucangeli Obes <[email protected]>
1 file changed