Fix out-of-tree build.
Fix out-of-tree build.

* tools/client-side/svn-bench/null-export-cmd.c
  (client.h): use full relative path to include private header

Found by: philip

git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1390583 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion