Fix issue 4356, status segv after interrupted move.

* subversion/libsvn_wc/wc_db.c
  (svn_wc__db_scan_moved): Return error if no moved-to found.

* subversion/tests/cmdline/move_tests.py
  (move_missing): Remove XFAIL.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1469512 13f79535-47bb-0310-9956-ffa450edef68