Merge branch 'for-linus-4.13-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml

Pull UML fix from Richard Weinberger:
 "This contains a single fix for a regression which was introduced while
  the merge window"

* 'for-linus-4.13-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml:
  um: Fix check for _xstate for older hosts