Source code tidying. Tweak the calls to svn_cl__try: the argument list
sentinel value should be 0 (or alternatively APR_SUCCESS) rather than
SVN_NO_ERROR, since the latter is nominally of type pointer-to-svn_error_t,
although currently defined as plain 0.

* subversion/svn/cl.h,
  tools/client-side/svn-bench/cl.h
  (svn_cl__try): Adjust the doc string.

* subversion/svn/add-cmd.c
  (svn_cl__add): Use 0 for the sentinel argument to svn_cl__try.

* subversion/svn/cat-cmd.c
  (svn_cl__cat): Same.

* subversion/svn/changelist-cmd.c
  (svn_cl__changelist): Same.

* subversion/svn/proplist-cmd.c
  (svn_cl__proplist): Same.

* subversion/svn/status-cmd.c
  (svn_cl__status): Same.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1543507 13f79535-47bb-0310-9956-ffa450edef68