Merge remote-tracking branch 'remotes/dgilbert/tags/pull-migration-20170802a' into...

Merge remote-tracking branch 'remotes/dgilbert/tags/pull-migration-20170802a' into staging

Migration pull 2017-08-02

Just minor fixes for 2.10

# gpg: Signature made Wed 02 Aug 2017 14:55:21 BST
# gpg:                using RSA key 0x0516331EBC5BFDE7
# gpg: Good signature from "Dr. David Alan Gilbert (RH2) <dgilbert@redhat.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 45F5 C71B 4A0C B7FB 977A  9FA9 0516 331E BC5B FDE7

* remotes/dgilbert/tags/pull-migration-20170802a:
  io: fix qio_channel_socket_accept err handling
  migration: fix comment disorder in RAMState
  migration: fix small leaks

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>