Following up on r1441276 and r1441280, reinstate the checks on just the number
of received property changes (which is always > 0), as more code than expected
was relying on always seeing these property changes. Without this certain local
changes are reported via different code paths which produced unexpected
results.

* subversion/libsvn_wc/diff_editor.c
  (close_directory,
   close_file): Revert usage of has_propchange as much cheaper check.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1441641 13f79535-47bb-0310-9956-ffa450edef68