Merge changes I035cd9b6,I8ca9f205 am: 40fded7e6a
am: abf2c81d1d

* commit 'abf2c81d1dba36cb71eed73d7a3a85bbefebb7ed':
  Make the SOCK_DESTROY tests work again.
  Make CloseSocketFromFd work on mapped sockets too.