Fixed a bug in the JavaHL implementatino of get_file_revs.
It's usually a good idea to not leave pointers uninitialized.

* subversion/bindings/javahl/native/RemoteSession.cpp: Include svn_delta.h.
  (FileRevisionHandler::callback): Initialize the delta handler and baton
   to a no-op handler.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1518965 13f79535-47bb-0310-9956-ffa450edef68