Folow up to r1534037: Add missing include.

* subversion/libsvn_subr/cmdline.c: Do not include win32_xlate.c.
  Include private/svn_subr_private.h instead.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1534039 13f79535-47bb-0310-9956-ffa450edef68