Fix a crash in JavaHL.

* subversion/bindings/javahl/native/CreateJ.cpp
  (fill_property_map): Treat property diffs as an APR array of svn_prop_t
   elements, not svn_prop_t* pointers.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1606731 13f79535-47bb-0310-9956-ffa450edef68