Fix an error leak.
Fix an error leak.

* subversion/libsvn_client/copy.c
  (repos_to_repos_copy): Clear an error, before returning a different one.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@865066 13f79535-47bb-0310-9956-ffa450edef68

wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion