tree be1e1ffc27117fe9e0ce4fbbd41e717cd6c92617
parent 738c8b65eb418e475d082f6cc66d971ec2a4604a
author Ningyuan Wang <nywang@google.com> 1454436487 -0800
committer Ningyuan Wang <nywang@google.com> 1454451286 -0800

DHCPMessage: change the return type of InitRequest()

Change the return type of DHCPMessage::InitRequest() from
'DHCPMessage' to 'void' to avoid copy constructor.

Bug: 25642025
TEST=compile and unittest

Change-Id: I4dd85644ebb5f29f5a56f4a24b898f06e6cacecd