Add some error-scenario cleanup logic, some of it needed since r34187 stopped using delete-on-close semantics for the tempfile, some of it needed probably since the inception of this code.
Add some error-scenario cleanup logic, some of it needed since r34187
stopped using delete-on-close semantics for the tempfile, some of it
needed probably since the inception of this code.

* subversion/libsvn_subr/subst.c
  (svn_subst_copy_and_translate3): Clean up streams and temporary
    files in the error case.  The lack of this code was causing
    translate-tests 14 to leave two tempfile turds.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@874277 13f79535-47bb-0310-9956-ffa450edef68

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